📊 Total Species: 3438 animals
🌍 Coverage: Worldwide
📱 Features: Interactive map, photo sharing, personal collection tracking
🌍 Coverage: Worldwide
📱 Features: Interactive map, photo sharing, personal collection tracking
Browse All Species (3438)
Click any species below to view detailed information, images, and conservation status.
- Abe's Flyingfish
- Abert's Squirrel
- Abyssal Snailfish
- Acalyptrate Flies
- Acanthaspis fuscinervis
- Acantus Sarota
- Acharia nesea
- Acorn Woodpecker
- Acrossocheilinae
- Acrossocheilus
- Adder
- Adejeania vexatrix
- Adelotus
- Adonis Blue
- Adriatic Sturgeon
- Aerial Yellowjackets
- Aesculapian Snake
- African Buffalo
- African Clawed Frog
- African Freshwater Pufferfishes
- African Hairy Bush Viper
- African Leopard
- African Oystercatcher
- African Sacred Ibis
- African Savanna Elephant
- African Savanna Hare
- African Spurred Tortoise
- African Tilapias
- Afro-Malagasy Mabuyas
- Agallia consobrina
- Aganacris velutina
- Agile Frog
- Ailanthus Silkmoth
- Ailao spiny toad
- Alabama Cavefish
- Alabama Waterdog
- Alagoas Foliage-gleaner
- Albany Blackbutt
- Alborella
- Alcatrazes Lancehead
- Alcedo Volcano Giant Tortoise
- Alfalfa Plant Bug
- Algodones Sand Treader Cricket
- Allegheny Mountain Dusky Salamander
- Allegheny Pearl Dace
- Allen's Hummingbird
- Alligator Snapping Turtle
- Alpaca
- Alpine Ibex
- Alpine Marmot
- Alpine Metallic Cockroach
- Alpine Newt
- Alpine Rose
- Althaemenes maculalutea
- Amazon Leaffish
- Amazon River Dolphin
- Amazon Sapphirewing
- Amber Arctiid Moth
- Ambilobe Leaf-nosed Snake
- Amblyglyphidodon
- American Alligator
- American Avocet
- American Badger
- American Barn Owl
- American Barn Swallow
- American Beaver
- American Bison
- American Bittern
- American Black Bear
- American Bullfrog
- American Conger
- American Coot
- American Crocodile
- American Crow
- American Dagger
- American Ermine
- American Flamingo
- American Gizzard Shad
- American Golden Plover
- American Great Egret
- American Kestrel
- American Lady
- American Mink
- American Orange-barred Sulphur
- American Osprey
- American Oystercatcher
- American Paddlefish
- American Pelecinid Wasp
- American Pika
- American Red Squirrel
- American Robin
- American Snout
- American Toad
- American Water Frogs
- American Water Shrew complex
- American White Pelican
- American Wigeon
- American Wolverine
- American plantain
- American searocket
- American sweetgum
- American × Chain Pickerel
- Amerila astreus
- Ammophila rubripes
- Amphibians
- Ampurta
- Amu Darya Sturgeon
- Amur Carp
- Amur Leopard
- Amur Tiger
- Anarta pugnax
- Andeabatis chilensis
- Andean Cat
- Andean Orange-thighed Frog
- Andean Poison Frog
- Andricus quercustozae
- Angulate Tortoise
- Anhinga
- Anna's Hummingbird
- Anolis bahorucoensis bahorucoensis
- Anolis equestris potior
- Anoplognathus viriditarsis
- Ant Flies
- Ant Woodlouse
- Ant-mimicking Treehopper
- Antarctic Minke Whale
- Antarctic Snaggletooth
- Antarctic horsefish
- Antechinuses
- Antennarius
- Anteros aurigans
- Antestiopsis cruciata
- Anthophora hololeuca
- Antioquia Glass Frog
- Ants
- Ants, Bees, Wasps, and Sawflies
- Aphis
- Aphyosemion splendopleure
- Aquatic Garter Snake
- Arabian Leopard
- Arboreal Salamander
- Arcangeli's Pill Woodlouse
- Arctic Char
- Arctic Fox
- Arctic Reindeer
- Arctic Wolf
- Argentine Ant
- Argentine Toad
- Aristotle’s Catfish
- Arizona Mantis
- Arizona Ridgenose Rattlesnake
- Armadillo ant
- Armadillo officinalis
- Armenian Viper
- Armyworm Moths
- Arno Goby
- Artedius
- Ascot Hat
- Ashe's Bush Viper
- Ashy Darter
- Asian Black Bear
- Asian Cheetah
- Asian Common Toad
- Asian Elephant
- Asian Green Bee-eater
- Asian House Gecko
- Asian House Shrew
- Asian Lady Beetle
- Asian Openbill
- Asian Painted Frog
- Asian Sand Cat
- Asian Toads
- Asian Wildcat
- Asiatic Toad
- Asiatyphlopinae
- Asp Viper
- Atala
- Atelius expansicornis
- Atitlán Grebe
- Atlantic Blackwing Flyingfish
- Atlantic Bluefin Tuna
- Atlantic Flyingfish
- Atlantic Goliath Grouper
- Atlantic Menhaden
- Atlantic Needlefish
- Atlantic Sailfin Flyingfish
- Atlantic Silver Hatchetfish
- Atlantic Spotted Dolphin
- Atlantic Stream Crayfish
- Atlantic Sturgeon
- Atlantic Tarpon
- Atlantic Wolffish
- Atta Leaf-cutter Ants
- Atyriodes
- Auckland Islands Rail
- Audubon's Warbler
- Aurora House Snake
- Australasian Sea Lions
- Australasian Short-necked Turtles
- Australasian Snapper
- Australian Black Field Cricket
- Australian Boobook
- Australian Brown Snakes
- Australian Elapids (inc. Sea Snakes)
- Australian Long-finned Eel
- Australian Marbled Geckos
- Australian Sunskinks
- Australian Water Dragon
- Australian Wood Frog
- Australian bag moth
- Autumn Meadowhawk
- Axillary Seabream
- Axolotl
- Azteca diabolica
- Azure Tit
- Badditu Forest Tree Frog
- Bagrid Catfishes
- Bagworm Moths
- Bagworms, Clothes Moths, and Allies
- Bahama Nuthatch
- Bahia Smooth-horned Frog
- Bald Eagle
- Bald-faced Hornet
- Bale Mountains Tree Frog
- Balkan Green Lizard
- Bamra
- Bananaquit
- Banded Caecilian
- Banded Garden Spider
- Banded Killifish × Blackstripe Topminnow
- Banded Mulletgoby
- Banded Pipefish
- Banded Red Harlequin
- Banded Rock Rattlesnake
- Banded Stream Frog
- Banded Watersnake
- Banded-wing Flies
- Bandwing Flyingfish
- Bangalore Geckoella
- Banjo and Marsh Frogs
- Bank Vole
- Barbary Dovey2
- Bare-faced Ibis
- Bare-nosed Wombat
- Bark Gecko
- Barking Frog
- Barking Treefrog
- Barn Swallow
- Baron's Mantella
- Barramundi
- Barred Fire Salamander
- Barred Owl
- Bartail Flathead
- Bartlett's Anthias
- Basilisk Rattlesnake
- Bat Star
- Bats
- Battus philenor philenor
- Bay Anchovy
- Bay Bolete
- Bay Cat
- Beaded Gecko
- Bearded Dragons
- Bearded Mudskipper
- Bearded Reedling
- Beautiful Squirrels
- Beauty Ratsnake
- Beavers
- Bee Beetles and Flower Scarabs
- Bee Hummingbird
- Beetles
- Beggarticks
- Bellotti's Goby
- Belostoma flumineum
- Belted Kingfisher
- Belted Springtail
- Bengal Monitor
- Bengal Tiger
- Bermuda grass
- Berthelot's Pipit
- Bewick's Wren
- Bicolored Sallow
- Bicoloured Quill-snouted Snake
- Bicoloured Shrew
- Big Brown Bat
- Big-Eyed Ratsnake
- Bigbelly Seahorse
- Bigg's Killer Whale
- Bighorn Sheep
- Bigjaw Mountain Stag Beetle
- Binocular Fish
- Birch Catkin Bug
- Birds
- Bitta affinis
- Black Bullhead
- Black Drongo
- Black Flying-fox
- Black Giant Ichneumonid Wasp
- Black Girdled Lizard
- Black Jumping Salamander
- Black Loosejaw
- Black Mamba
- Black Meadowhawk
- Black Olm
- Black Oystercatcher
- Black Phoebe
- Black Rain Frog
- Black Rat
- Black Redstart
- Black Rock Skink
- Black Scabbardfish
- Black Scavenger Flies
- Black Scorpionfish
- Black Seabream
- Black Skimmer
- Black Soldier Fly
- Black Swallowtail
- Black Tar Spot
- Black Turnstone
- Black Vulture
- Black Witch
- Black Woodpecker
- Black planthopper
- Black-and-white Owl
- Black-and-white Warbler
- Black-backed Dwarf Kingfisher
- Black-backed Jackal
- Black-backed Woodpecker
- Black-banded Snake
- Black-bellied Pangolin
- Black-bellied Plover
- Black-billed Thrush
- Black-browed Albatross
- Black-capped Chickadee
- Black-chested Snake-Eagle
- Black-crowned Night Heron
- Black-finned Snake Eel
- Black-footed Cat
- Black-footed Ferret
- Black-headed Cardinal Beetle
- Black-headed Cat Snake
- Black-headed Grosbeak
- Black-headed Gull
- Black-naped Hooded Snake
- Black-necked Stilt
- Black-rumped Flameback
- Black-spotted Frog
- Black-spotted Labyrinth
- Black-spotted Prominent
- Black-tailed Jackrabbit
- Black-tailed Prairie Dog
- Black-throated Sparrow
- Black-winged Stilt
- Black-winged Subterranean Termite
- Blackburnian Warbler
- Blackhand Paradisefish
- Blackhead Seabream
- Blackish Oystercatcher
- Blacksail Flyingfish
- Blacksmith Lapwing
- Blackspotted Wrasse
- Blackwing Flyingfish
- Blainville's Horned Lizard
- Blanford's Pipe Snake
- Blastobasis tarda
- Bleeding Fairy Helmet
- Blob Sculpin
- Blotched house gecko
- Blue Anole
- Blue Ant
- Blue Catfish
- Blue Dasher
- Blue Doctor
- Blue Fungus Beetle
- Blue Jay
- Blue Pansy
- Blue Racer
- Blue Ridge Sculpin
- Blue Spiny Lizard
- Blue Weed-whiting
- Blue Whale
- Blue and Steller's Jays
- Blue-barred Parrotfish
- Blue-eyed Ensign Wasp
- Blue-gray Gnatcatcher
- Blue-headed Vireo
- Blue-lipped Sea Krait
- Blue-ringed Dancer
- Blue-spotted Cornetfish
- Blue-spotted Mudskipper
- Blue-spotted Salamander
- Blue-tailed Damselfly
- Blue-winged Teal
- Blueback Damselfish
- Bluebirds
- Bluefin Leatherjacket
- Bluegill
- Bluenose Shiner
- Blunthead Slug Snake
- Blyth's Reticulate Snake
- Boa Constrictor
- Boat-billed Flycatcher
- Boat-billed Heron
- Bobcat
- Bocourt's Terrific Skink
- Boddart's Blue-spotted Mudskipper
- Bolitoglossa cathyledecae
- Bonnet Macaque
- Bony-eared Assfish
- Borderlander Harlequin Frog
- Boreal Chorus Frog
- Boreal Digging Frog
- Bornean Clouded Leopard
- Bornean Frogmouth
- Bornean Stink-badger
- Bornean rhinoceros
- Borneo Earless Monitor
- Borneo Forest Dragon
- Boto
- Bowhead Whale
- Box Tree Moth
- Brachyceran Flies
- Brahminy Blindsnake
- Brambling
- Brandt's Cormorant
- Brazilian Rainforest Cicada
- Brazos River Watersnake
- Brewer's Blackbird
- Bristly Cutworm Moth
- British Hedgehog
- Brittle Pricklypear
- Broad-banded Watersnake
- Broad-leaved Chervil
- Broad-palmed Rocket Frog
- Broadbill Swordfish
- Broadnosed Pipefish
- Bronze Mabuya
- Brook Trout
- Brown Anole
- Brown Bear
- Brown Centipede
- Brown Fur Seal
- Brown Hare
- Brown Leaf Chameleon
- Brown Marmorated Stink Bug
- Brown Pelican
- Brown Rat
- Brown Rove Beetle
- Brown Skua
- Brown Stink Bug
- Brown Trout
- Brown spotted pitviper
- Brown-crowned Tchagra
- Brown-headed Cowbird
- Brown-headed Nuthatch
- Brown-lipped Snail
- Brown-throated Three-toed Sloth
- Brush Rabbit
- Brush-tailed Phascogale
- Buchanan's Snake-eyed Skink
- Buckler Dory
- Budgerigar
- Budgett's Frog
- Buff Ermine
- Buff Striped Keelback
- Buffalofish
- Bullethead Blenny
- Bullseye Puffer
- Bumble Bees
- Bump-head Mola
- Burmese Python
- Burning Blister Beetles
- Burrowing Frogs
- Burrowing Owl
- Burton's Legless Lizard
- Bush Stone-curlew
- Bushtit
- Butler's Garter Snake
- Butterflies and Moths
- Butterfly Mackerel
- Butterfly Peacock Bass
- Butterflyfishes, Angelfishes, and Allies
- Cactus Lady Beetle
- Cactus Wren
- Cales and Weed Whitings
- Calhypnorna pulchella
- Calico Pennant
- California Black Rail
- California Brown Pelican
- California Condor
- California Giant Salamander
- California Ground Squirrel
- California Gull
- California King Snake
- California Mountain Kingsnake
- California Mule Deer
- California Newt
- California Pink Glowworm
- California Red-sided Garter Snake
- California Scrub-Jay
- California Sea Lion
- California Slender Salamander
- California Tiger Salamander
- California Toad
- California Towhee
- Calliteara
- Calodromus
- Calotes wangi wangi
- Camarotus
- Cameraria
- Camponotus mirabilis
- Campostoma × Rhinichthys
- Canada Goose
- Canada Jay
- Canada Lynx
- Canadian Tiger Swallowtail
- Canadian Toad
- Canadian bunchberry
- Canarian Lizards
- Candi River Goby
- Candy Darter
- Cane Toad
- Canterbury Knobbled Weevil
- Cantor's Gudgeon
- Cape Buffalo
- Cape Centipede-Eater
- Cape Chacma Baboon
- Cape Dwarf Chameleon
- Cape Fur Seal
- Cape Girdled Lizard
- Cape Golden Mole
- Cape House Snake
- Cape Klipspringer
- Cape May Warbler
- Cape Porcupine
- Cape Rock Hyrax
- Cape Sand Snake
- Cape Snake Lizard
- Cape Southern Fiscal
- Cape Wild Dog
- Caprainea echinata
- Capybara
- Carabus coriaceus
- Caracal
- Caranginae
- Carea
- Caribbean Ocellated Moray
- Caribou
- Carnivorans
- Carolina Chickadee
- Carolina Mantis
- Carolina Pygmy Rattlesnake
- Carolina Sphinx
- Carolina Spreadwing
- Carolina Wren
- Carpenter Ants, Typical Sugar Ants and Allies
- Carpet Python
- Carps, characins, catfishes and allies
- Carriola witti
- Carrion Crow
- Cascades Frog
- Caspian Bent-toed Gecko
- Caspian Monitor
- Caspian Tern
- Caspian Whipsnake
- Cassidy's Poison Dart Frog
- Cassin's Kingbird
- Cattleya
- Caucasian Squirrel
- Cave Gudgeon
- Cave Salamander
- Cavedano Chub
- Cayman Brac Cicada
- Cazira verrucosa
- Cecropia Moth
- Cedar Waxwing
- Central American Agouti
- Central American Boa
- Central American Eyelash-Viper
- Central American Gulf Coast Toad
- Central American Spider Monkey
- Central American White-faced Capuchin
- Central Bearded Dragon
- Central Bright-eyed Frog
- Central Netted Dragon
- Central Russian Red Squirrel
- Cephalopholis
- Cephonodes hylas hylas
- Ceramica
- Cerastipsocus
- Ceraunus Blue
- Cercidocerus
- Cerocranus extremus
- Cerulean Carpenter
- Chacma Baboon
- Chaetophiloscia cellaria
- Chaetophiloscia elongata
- Chaetophiloscia sicula
- Chalcides ocellatus linosae
- Chalk-browed Mockingbird
- Chalky Percher
- Channel Catfish
- Chaunax
- Checkered Barb
- Checkered Madtom
- Checkered Sengi
- Cheetah
- Chelostomoides
- Cherry Salmon
- Chestnut-backed Chickadee
- Chevron Skink
- Chicken Turtle
- Chilean Flamingo
- Chilean Swallow
- Chilean wine palm
- Chiloe Wigeon
- China Grass Lizard
- Chinese Alligator
- Chinese High-fin Banded Shark
- Chinese Kukri Snake
- Chinese Mantis
- Chinese Many-tooth Snake
- Chinese Minnow
- Chinese Mountain Cat
- Chinese Paddlefish
- Chinese Red Panda
- Chinese Slug Snake
- Chinese Softshell Turtle
- Chinese rose beetle
- Chinook Salmon
- Chinstrap Penguin
- Chiriquí Harlequin Frog
- Chironomini
- Chironomus
- Chital
- Chloromyia
- Chocoan bushmaster
- Chocolate Grouper
- Christmas Beetles
- Chrysis jucunda
- Chrysis semicincta
- Chunam Tree Frog
- Cicadinae
- Cicindela octonotata
- Cinnamon Bittern
- Cinnamon Teal
- Citheronia phoronea
- Cladonota apicalis
- Clancy's Rustic
- Clarias
- Clark's Grebe
- Clay-colored Sparrow
- Clearwing Flyingfish
- Clematis and leatherflowers
- Click, Firefly, and Soldier Beetles
- Clicking Stream Frog
- Climbing Perch
- Clingfishes
- Clouded Monitor
- Clouded Yellow
- Clown Stink Bug
- Cluster Flies
- Coachwhip
- Coal Tit
- Coast Garter Snake
- Coast Mountain Kingsnake
- Coastal Carpet Python
- Coastal Giant Salamander
- Coastal Great Horned Owl
- Coastal Tailed Frog
- Coccinula quatuordecimpustulata
- Cockatiel
- Cocoi Heron
- Coker's amanita
- Collared Ants
- Collared Peccary
- Collared flat-backed millipede
- Collett's Tree Frog
- Colocolo
- Colombian Giant Anole
- Colombian Weasel
- Colubrine Snakes
- Columbia Spotted Frog
- Columbian Black-tailed Deer
- Columbian Ground Squirrel
- Columbian Trig
- Comber
- Common Bamboo Viper
- Common Barbel
- Common Blue
- Common Bluetongue
- Common Blunt-headed Tree Snake
- Common Boomslang
- Common Bottlenose Dolphin
- Common Box Turtle
- Common Bream
- Common Brushtail Possum
- Common Buckeye
- Common Buzzard
- Common Carder Bumble Bee
- Common Chaffinch
- Common Chameleon
- Common Chiffchaff
- Common Coqui
- Common Crane
- Common Crow Butterfly
- Common Darter
- Common Dolphin
- Common Domestic Goat
- Common Dor Beetle
- Common Drone Fly
- Common Dwarf Gecko
- Common Dwarf Mongoose
- Common Eastern Bluebird
- Common Eastern Bumble Bee
- Common Eastern Froglet
- Common Eland
- Common Evening Brown
- Common Flesh Flies
- Common Gallinule
- Common Garter Snake
- Common Giant Plated Lizard
- Common Golden-mantled Ground Squirrel
- Common Grackle
- Common Green Darner
- Common Green Lacewings
- Common Gull
- Common Hedgehog
- Common Hippopotamus
- Common Hoopoe
- Common Idia Moth
- Common Impala
- Common Kingfisher
- Common Knob-tailed Gecko
- Common Leopard Gecko
- Common Lionfish
- Common Long-tailed Macaque
- Common Loon
- Common Looper Moth
- Common Merganser
- Common Mist Frog
- Common Mock Viper
- Common Mola
- Common Moorhen
- Common Mudpuppy
- Common Muskrats
- Common Myna
- Common Orache
- Common Paddy Field Frog
- Common Palm Civets
- Common Pandora
- Common Picture-winged Fly
- Common Pill Woodlouse
- Common Pipistrelle
- Common Prickly Gecko
- Common Raccoon
- Common Rain Frog
- Common Raven
- Common Red Soldier Beetle
- Common Reed Frog
- Common Ribbon Snake
- Common Ring-tailed Possum
- Common Rudd
- Common Shiner
- Common Shrew
- Common Slowworm
- Common Snappers
- Common Snapping Turtle
- Common Snook
- Common Southwest Ctenotus
- Common Spiny Flower Mantis
- Common Striped Woodlouse
- Common Sun Skink
- Common Tern
- Common Toadfish
- Common Tree Crickets
- Common Tree Snake
- Common True Katydid
- Common Two-banded Seabream
- Common Vole
- Common Wall Lizard
- Common Warthog
- Common Water Monitor
- Common White-faced Heron
- Common Wildebeest
- Common Winter Damselfly
- Common Wood-Pigeon
- Common Wormsnake
- Common Yellowthroat
- Common green bee-eater
- Common skittering frog
- Common thread turtle
- Compsus viridivittatus
- Continental Great Cormorant
- Conura lasnierii
- Conura rufa
- Cooper's Hawk
- Cope's Giant Salamander
- Cope's Gray Treefrog
- Copperhead Rat Snake
- Coquena
- Corades yanacocha
- Corn Snake
- Cornfield Grasshopper
- Corrupt Barklouse
- Corymica immaculata
- Corynoneura Group
- Costa's Hummingbird
- Couch's Spadefoot
- Cow Knob Salamander
- Coyote
- Coypu
- Crab Spiders
- Crab-eating Fox
- Crambomorphus
- Cream-spotted Mountain Snake
- Crematogaster osakensis
- Creobroter
- Crescent Grunter
- Crescent Shiner
- Crested Chameleon
- Crested Guan
- Crested Porcupine
- Crested Satinbird
- Crested Tit
- Crimson Marsh Glider
- Crimson Rose
- Crimson Rosella
- Crimson Speckled Footman
- Cross Orbweaver
- Cross-striped Cabbageworm Moth
- Crotalaria Podbearer
- Crowned Bullfrogs and Tiger Frogs
- Crows and Ravens
- Crucian Carps
- Crucifix Spadefoot Frog
- Cryptic Mantis
- Cuban Tody
- Cuban Tree Frog
- Cucujiform Beetles
- Culex
- Culicine Mosquitoes
- Cunningham's Skink
- Curly Woodlouse
- Cururu Toad
- Cuterebra mirabilis
- Cuyaba Dwarf Frog
- Cyamudongo Forest Caecilian
- Cyana quadrinotata
- Cyclotus
- Cylindromyia
- Cymbalophora
- Cynoglossus
- Cyprinids
- Dacini
- Daedaleopsis
- Dalmatian Wall Lizard
- Damara Ground Squirrel
- Damara Molerat
- Damselfishes
- Danaid Eggfly
- Darevskia nairensis
- Dark Flower Scarab
- Dark-eyed Junco
- Dark-sided Chorus Frog
- Dark-sided Flycatcher
- Dark-spotted Anaconda
- Darkling Beetles
- Darters
- Dasineura folliculi
- De Villiers's Moss Frog
- De Winton's Golden Mole
- DeKay's Brownsnake
- Deadly Nightshade
- Decidia magnifica
- Deepsea Lizardfish
- Deepwater Eel
- Deer
- Definite Tussock Moth
- Delta Smelt
- Deltoplastis
- Dendrokara monstrosa
- Dendy's Brood Frog
- Desert Box Turtle
- Desert Cottontail
- Desert Rain Frog
- Desert Spadefoot Frog
- Devil's Coach Horse Beetle
- Devils Hole Pupfish
- Diadems & Eggflies
- Diamondback Watersnake
- Dicarnosis erythrocephala
- Dicyrtoma fusca
- Dicyrtomina ornata
- Dilemma Orchid Bee
- Dingo
- Dingy Cutworm Moth
- Dirhinus texana
- Discobola annulata
- Disholcaspis quercusvirens
- Diva Hemerophila
- Diversibipalium multilineatum
- Dock Bug
- Dog-day Cicadas
- Dolichus halensis
- Dolly Varden
- Domestic Cat
- Domestic Cattle
- Domestic Chicken
- Domestic Dog
- Domestic Goat
- Domestic Greylag Goose
- Domestic Guinea Pig
- Domestic Horse
- Domestic Horse × Plains Zebra
- Domestic Mallard
- Domestic Sheep
- Domestic Turkey
- Domestic Water Buffalo
- Donkey
- Dor's Sole
- Doratoptera nicevillei
- Dorcas Gazelle
- Dorset Heath
- Double-crested Cormorant
- Double-scaled Chameleon
- Doublecone Grass Mantis
- Douc Langurs
- Douglas's Ground Squirrel
- Douglas's Squirrel
- Downy Woodpecker
- Drabescini
- Dragon Mantis
- Dragon Moray
- Dragonets
- Dragonhunter
- Drone Flies
- Dtellas
- Duckbilled clingfish
- Ducks, Geese, and Swans
- Ducula bicolor bicolor
- Dugong
- Dull-colored Grassquit
- Dumbéa River Pipefish
- Dumeril's Worm Lizard
- Dune geckos
- Dunlin
- Dunn's Marsupial Frog
- Dunnock
- Dusky Batfish
- Dusky Driftfish
- Dusky Earless Agama
- Dusky Flathead
- Dusky Grouper
- Dusky Leaf Monkey
- Dusky Seaside Sparrow
- Duskytail Grouper
- Dussumier's Litter Skink
- Dussumier's Rockskipper
- Dwarf American Toad
- Dwarf Beaked Snake
- Dwarf Bearded Dragon
- Dwarf Sturgeon
- Dybowski's Frog
- Dynastor darius stygianus
- Dysgonia stuposa
- Earwigs
- East African Crocodile
- East African Eland
- East African Wolf
- East Asian Ornate Chorus Frog
- East Atlantic Peacock Wrasse
- Eastern Amberwing
- Eastern American Red Fox
- Eastern American Toad
- Eastern Australian Salmon
- Eastern Banjo Frog
- Eastern Bearded Dragon
- Eastern Black Carpenter Ant
- Eastern Black-capped Chickadee
- Eastern Bluetongue
- Eastern Bobcat
- Eastern Box Turtle
- Eastern Boxelder Bug
- Eastern Brown Snake
- Eastern Cardinal
- Eastern Carpenter Bee
- Eastern Chipmunk
- Eastern Cleaner Clingfish
- Eastern Copperhead
- Eastern Coralsnake
- Eastern Cottontail
- Eastern Death's Head hawkmoth
- Eastern Deermouse
- Eastern Diamondback Rattlesnake
- Eastern Dwarf Tree Frog
- Eastern Fox Squirrel
- Eastern Galah
- Eastern Garter Snake
- Eastern Ghost Frog
- Eastern Glass Frog
- Eastern Glass Lizard
- Eastern Gobbleguts
- Eastern Golden Frog
- Eastern Gray Squirrel
- Eastern Grey Kangaroo
- Eastern Hellbender
- Eastern Hognose Snake
- Eastern Indigo Snake
- Eastern Kingbird
- Eastern Kingsnake
- Eastern Meadow Vole
- Eastern Milksnake
- Eastern Mole
- Eastern Mosquitofish
- Eastern Mud Turtle
- Eastern Mudsnake
- Eastern Muskrat
- Eastern Narrow-mouthed Toad
- Eastern Newt
- Eastern Painted Turtle
- Eastern Phoebe
- Eastern Pondhawk
- Eastern Quoll
- Eastern Rainbowfish
- Eastern Ratsnake
- Eastern Red Bat
- Eastern Red-backed Salamander
- Eastern Red-tailed Hawk
- Eastern Saw-shelled Turtle
- Eastern Shingleback
- Eastern Short-beaked Echidna
- Eastern Short-necked Turtle
- Eastern Stone Gecko
- Eastern Stripe-headed Cricket
- Eastern Tiger Salamander
- Eastern Tiger Swallowtail
- Eastern Wallaroo
- Eastern Water Dragon
- Eastern Water Skink
- Eastern Yellow Robin
- Ebony Grasshopper
- Echidnas
- Eciton hamatum
- Ecuador Horned Treefrog
- Edelweiss
- Egyptian Bird Grasshopper
- Egyptian Goose
- Egyptian House Sparrow
- Egyptian Mongoose
- Eiffinger's Tree Frog
- Elegant Sea Snake
- Elegant Snake-eyed Skink
- Eleodes gracilis distans
- Elephant Weevil
- Elm Zigzag Sawfly
- Elongate Mudskipper
- Embalse San Lorenzo Rain Frog
- Emerald Weedfish
- Emerald-banded Skimmer
- Emma Field Cricket
- Emperor Angelfish
- Empis bigoti
- Enchoptera nigricornis
- Ennominae
- Enteromius deserti
- Entomobrya multifasciata
- Epiplastocerus mirandus
- Epitausa
- Equines
- Ernassa
- Eromanga Basin Knob-tailed Gecko
- Erythrodiplax nigricans
- Estuarine Stonefish
- Estuary Cobbler
- Eudocima iridescens
- Eufriesea simillima
- Eupholus
- Eurasian Beaver
- Eurasian Blackbird
- Eurasian Blue Tit
- Eurasian Brown Bear
- Eurasian Collared-Dove
- Eurasian Coot
- Eurasian Eagle-Owl
- Eurasian Green Woodpecker
- Eurasian Griffon
- Eurasian Hamster
- Eurasian Harvest Mouse
- Eurasian Hobby
- Eurasian Hummingbird Hawkmoth
- Eurasian Jackdaw
- Eurasian Jay
- Eurasian Kestrel
- Eurasian Lynx
- Eurasian Magpie
- Eurasian Nightjar
- Eurasian Nuthatch
- Eurasian Otter
- Eurasian Pine Marten
- Eurasian Red Squirrel
- Eurasian Spoonbill
- Eurasian Tree Sparrow
- Eurasian Treecreeper
- Eurasian Vipers
- Eurasian Wolf
- Eurasian Wolverine
- Eurasian Wren
- Eurasian Wryneck
- Euricania ocellus
- European Badger
- European Bison
- European Carp
- European Common Frog
- European Conger
- European Crane Fly
- European Dwarf Mantis
- European Elk
- European Fallow Deer
- European Fat Dormouse
- European Firebug
- European Freshwater Shrimp
- European Goldfinch
- European Greenfinch
- European Herring Gull
- European Holly Leafminer
- European Hornet
- European Mantis
- European Mink
- European Mole
- European Paper Wasp
- European Peacock Butterfly
- European Perch
- European Plaice
- European Pond Turtle
- European Rabbit
- European Red Fox
- European Red-rumped Swallow
- European Robin
- European Rose Chafer
- European Serin
- European Sparrowhawk
- European Stag Beetle
- European Starling
- European Stonechat
- European Striped Shield Bug
- European Toad
- European Wildcat
- European Wood Mouse
- European barberry
- European × Green Toad
- Euthyrhynchus
- Even-toed Ungulates and Cetaceans
- Exallonyx
- Excastra albopilosa
- Eyetail Bowfin
- F-winged Barklouse
- Falcon Sphinx
- Fall Field Cricket
- False Coral Snake
- False Gharial
- False Potato Beetle
- False tomato frog
- Familiar Bluet
- Fang's Puffer
- Farlowella hahni
- Fea's Viper
- Fejervarya
- Fence Skink
- Fennec Fox
- Feral Pigeon
- Fervid Nomad Bee
- Festive Ribbonfish
- Field Sensitive Pea
- Field Skipper
- Fieldfare
- Fiery Skipper
- Filament Barb
- Filefishes
- Filfola Lizard
- Finescale Triggerfish
- Finlayson's Squirrel
- Fiordland Penguin
- Fire Dartfish
- Fire Eel
- Fire Salamander
- Fischer's Lovebird
- Fish Crow
- Fisher
- Fisk's House Snake
- Five-lined Flying Dragon
- Five-spotted Hawk Moth
- Five-spotted Wrasse
- Five-striped Palm Squirrel
- Five-toed Worm Lizard
- Flannel, Slug Caterpillar, Leaf Skeletonizer, and Allied Moths
- Flap-necked Chameleon
- Flat-tailed House Gecko
- Flavimaculosus Puffer
- Flies
- Florida Bluet
- Florida Cottonmouth
- Florida Manatee
- Florida Softshell Turtle
- Florida Watersnake
- Flower Snake
- Fly Agaric
- Flying Frogs
- Flying-foxes
- Flyingfishes
- Forest Bug
- Fork-tailed Bush Katydid
- Formica cunicularia
- Formosan Rock Macaque
- Fornasini's Spiny Reed Frog
- Four-lined Silverfish
- Four-spotted Footman
- Four-toed Salamander
- Fourfinger Threadfin
- Fowler's Toad
- Fox Moth
- Foxfire Fly
- Fragile Forktail
- Fraser's Delma
- Fraternal Potter Wasp
- Fregetta grallaria segethi
- French Grunt
- Freshwater Eels
- Freshwater Moray
- Frilled Dragon
- Frogs and Toads
- Frosted Phoenix
- Fungi Including Lichens
- Fungus Moths, Clothes Moths, & Allies
- Furrowed Ants
- Gaboon Caecilian
- Gaboon Viper
- Gadwall
- Galah
- Galaxy Frog
- Galeruca
- Galápagos Blue-footed Booby
- Galápagos Pink Land Iguana
- Galápagos Sea Lion
- Gambel's Quail
- Garden Commodore
- Garden Snail
- Garden Whites
- Garlic
- Garras
- Gaudy Sphinx
- Gaultheria borneensis
- Gem Tentfig
- Geminaria canalis
- Gemsbok
- Gensan Salamander
- Geoffroy’s Side-necked Turtle
- Geometer Moths
- Georgia Blind Salamander
- Germander Speedwell
- Gharial
- Ghost Ant
- Giant Armadillo
- Giant Birch Sawfly
- Giant Canyon Woodlouse
- Giant Cicada
- Giant Conehead Mantis
- Giant False Brook Salamander
- Giant Forest Hog
- Giant Mayfly
- Giant Meadow Saffron
- Giant Oarfish
- Giant Otter
- Giant Ottershrew
- Giant Petaltail
- Giant Rain Frog
- Giant Sabre Comb Horn Cranefly
- Giant Seahorse
- Giant Toad
- Giant arapaima
- Ginkgo-toothed Beaked Whale
- Gippsland Water Dragon
- Giraffe Weevil
- Giri's Geckoella
- Giuris viator
- Glacier Bear
- Glassy Darter
- Globefish
- Globular Frogs
- Glomeris connexa
- Glyphodes
- Glyphoglossus brooksii
- Goat Moth
- Gobies
- Gobiinae
- Goblet-marked Damselfly
- Goblinfish
- Gold-spotted Mudskipper
- Goldcrest
- Golden Eagle
- Golden Jackal
- Golden Kaiser-i-Hind
- Golden Lancehead
- Golden Manyplume Moth
- Golden Poison Dart Frog
- Golden Toad
- Golden Tree Snake
- Golden-bloomed Longhorn Beetle
- Golden-cheeked Warbler
- Golden-crowned Kinglet
- Golden-crowned Sparrow
- Golden-crowned Warbler
- Golden-fronted Woodpecker
- Golden-haired Tube-nosed Bat
- Golden-rumped Sengi
- Goldenrod Bunch Gall Midge
- Goldfish
- Goldspotted Rockcod
- Goliath Tigerfish
- Gonia picea
- Gonioctena fornicata
- Gopher Snake
- Gorgone Checkerspot
- Graceful Clingfish
- Graf's Hybrid Frog
- Grant’s Zebra
- Grass Demon
- Grass Lizards
- Grass Tubeworm Moths
- Grass Yellows
- Grasshoppers, Crickets, and Katydids
- Graveldiver
- Gray Catbird
- Gray Crowned-Crane
- Gray Fox
- Gray Hairstreak
- Gray Treefrog Species Complex
- Gray-cheeked Thrush
- Great Barracuda
- Great Basin Fence Lizard
- Great Basin Rattlesnake
- Great Black Digger Wasp
- Great Black Hawk
- Great Black-backed Gull
- Great Blue Heron
- Great Blue-spotted Mudskipper
- Great Bustard
- Great Cormorant
- Great Crested Flycatcher
- Great Crested Grebe
- Great Eared-Nightjar
- Great Egret
- Great Giant Scale
- Great Gray Owl
- Great Green Bush-cricket
- Great Hornbill
- Great Horned Owl
- Great Kiskadee
- Great Lakes Bush Viper
- Great Plains Toad
- Great Spangled Fritillary
- Great Spotted Woodpecker
- Great Spreadwing
- Great Thrush
- Great Tit
- Great Tits and Allies
- Great White Heron
- Great-tailed Grackle
- Greater Anglewing
- Greater Glider
- Greater Kudu
- Greater Lady Beetles
- Greater Musky Fruit Bat
- Greater Naked Bat
- Greater Prairie-Chicken
- Greater Rhea
- Greater Roadrunner
- Greater White-fronted Goose
- Greater Yellowlegs
- Green Anaconda
- Green Anole
- Green Bamboo Leaf Pit Viper
- Green Cloverworm Moth
- Green Dotted Tree Frog
- Green Dragontail Butterfly
- Green Frog
- Green Grocer
- Green Heron
- Green Iberian Wall Lizard
- Green Iguana
- Green Lizard
- Green Paddy Frog
- Green Riffle Goby
- Green Sea Turtle
- Green Shield Bug
- Green Stink Bug
- Green Sunfish
- Green Thornytail Iguana
- Green Toad
- Green Tree Frog
- Green Treefrog
- Green Whip Snake
- Green-and-Golden Bell Frog
- Green-breasted Mango
- Green-eyed Tree Frog
- Green-striped Grasshopper
- Green-winged Teal
- Green-winged Teals
- Greenhouse Millipede
- Gregory's Blue-headed Agama
- Grey Heron
- Grey Red-backed Vole
- Grey Seal
- Grey Wagtail
- Grey Whale
- Grey Worm
- Grey and Nilgiri Langurs
- Grey-headed Flying-fox
- Greylag Goose
- Grizzly Bear
- Grootvadersbosch Dwarf Chameleon
- Groove-billed Ani
- Grotto Sculpin
- Ground Agama
- Ground Yellowjackets
- Groundhog
- Groundselbush beetle
- Gryllus
- Guadarrama Wall Lizard
- Guajira Stubfoot Toad
- Guanaco
- Guatemala Neckband Snake
- Guatemala Palm Pit Viper
- Guenther's Frog
- Gulf Coast Toad
- Gulf Fritillary
- Gulf Saltmarsh Snake
- Gulf Sturgeon
- Gulf Toadfish
- Gully Shadeskink
- Gumleaf Grasshoppers
- Guppy
- Guttural Toad
- Gymnapistes
- Gyponana gladia
- Gyrfalcon
- Gyrophaena
- Hackberry Emperor
- Hairy Carpenter Ant
- Hairy Frog
- Hairy Woodpecker
- Half-edged Wall Jumping Spider
- Half-webbed pug-snouted frog
- Halys Pit Viper
- Hammertails
- Handmaidens
- Harbor Seal
- Harbour Porpoise
- Hardwick's Spiny-tailed Lizard
- Harlequin Beetle
- Harlequin Gecko
- Harmostes fraterculus
- Harpactorini
- Harpy Eagle
- Harris's Hawk
- Hartebeest
- Hawaiian Crow
- Hawaiian Goose
- Hazel Dormouse
- Hazel Grouse
- Heath Monitor
- Heaviside's Dolphin
- Hebata
- Heermann's Gull
- Helmeted Guineafowl
- Helmeted Iguana
- Helmeted Water Toad
- Helms' Alpine Crane Fly
- Hemiodoecellus fidelis
- Hemistola fuscimargo
- Heppner's Grass Tubeworm Moth
- Heraclides anchisiades idaeus
- Hermann's Tortoise
- Hermetia
- Hermit Thrush
- Heterocerus fenestratus
- Heteronotus trinodosus
- Heteropterna
- Hewett's Coris
- Hewlettia nigriviridis
- Hexatoma albitarsis
- Hickory Nut Gorge Green Salamander
- Hickory Tussock Moth
- Hierodula tenuidentata
- Highfin Spotted Plecostomus
- Himalayan Cloak-and-dagger Bee
- Himalayan Marmot
- Himalayan Pika
- Hipparchia
- Hippopotamuses
- Hirundichthys
- Hispaniolan Solenodon
- Hispid Cotton Rat
- Hitched Arches
- Hoary Marmot
- Hoary Plantain
- Hoatzin
- Hoffmann's Two-toed Sloth
- Hogchoker
- Holarctic Treefrogs
- Honey Bees
- Honey Bees, Bumble Bees, and Allies
- Hong Kong Rice-paddy Frog
- Hong Kong Warty Newt
- Hooded Crow
- Hooded Grasshopper
- Hooded Merganser
- Hooded Oriole
- Hooded Vulture
- Hoodwinker Mola
- Horned Leafhopper
- Horse Leech
- Horseshoe Leatherjacket
- Horseshoe Whip Snake
- Hose-nosed Weevil
- Hourglass Dolphin
- House Centipede
- House Finch
- House Flies and Allies
- House Geckos
- House Mouse
- House Sparrow
- Howdenypa gloriosa
- Huamantlan Rattlesnake
- Hula Painted Frog
- Human
- Hummingbird Clearwing
- Humpback Blackdevil
- Humpback Grouper
- Humpback Whale
- Hydnocristella himantia
- Hydropsyche
- Hygophum benoiti
- Hyline Tree Frogs
- Hypholoma
- Iberian Green Frog
- Iberian Red Fox
- Iberian Ribbed Newt
- Ichneumonid Wasps
- Iguania
- Ijimaia
- Ijimaia antillarum
- Ilisha
- Illeis cincta
- Imbabura Tree Frog
- Imienpo Station frog
- Impala
- Inaccessible Island Rail
- Inara
- Inca Dove
- Indian Cobra
- Indian Crested Porcupine
- Indian Flapshell Turtle
- Indian Flying Fox
- Indian Forest Skink
- Indian Golden Oriole
- Indian Humpback Dolphin
- Indian Leopard
- Indian Lily Moth
- Indian Peafowl
- Indian Python
- Indian Sailfin Tang
- Indian Silverbill
- Indian Spot-billed Duck
- Indian Spotted Deer
- Indian Vine Snake
- Indigo Bunting
- Indo-Pacific Bottlenose Dolphin
- Indochinese Garden Lizard
- Indochinese Long-nosed Whipsnake
- Indomalayan Water Monitor
- Indonesian Javan Rhinoceros
- Indus Valley Bullfrog
- Iniistius
- Inimia nat
- Inland Taipan
- Inland marbled velvet gecko
- Insects
- Io Moth
- Iotaphora iridicolor
- Iridescent Shark
- Iris weevil
- Isabella Tiger Moth
- Isochaetes
- Israeli Mole Viper
- Italian Cave Salamander
- Italian Crested Newt
- Italian Slowworm
- Italian Sparrow
- Italian Stream Frog
- Italian Three-toed Skink
- Italian Tree Frog
- Italian Wall Lizard
- Italian White-clawed Crayfish
- Itjaritjari
- Ivy Cellophane Bee
- Jacks
- Jacky Dragon
- Jaguar
- Jaguar Leaf Frog
- Japanese Amazon Ant
- Japanese Beetle
- Japanese Eel
- Japanese Giant Salamander
- Japanese Rift Salamander
- Japanese Serow
- Japanese Tiger Beetle
- Japanese Tree Frog
- Japanese knotweed
- Japanese maple
- Jelly Ear
- Jemez Mountains Salamander
- Jewel Caterpillar Moth
- Jewel Caterpillar Moths
- Jewel Flutterer
- Jewel Longhorn Beetle
- Jewel Weevil
- Jordan's Casque-headed Tree Frog
- Juami River Rocket Frog
- Julodis viridipes
- Juneau Weasel
- Jungle Palm Squirrel
- Jungle Perch
- KZN Jumping Flowers
- Kalimantan Jungle Toad
- Kanawha Darter
- Kangaroos, Wallabies and Allies
- Karoo Caco
- Karoo Toad
- Katydids
- Kea
- Keeled Indian Mabuya
- Keeled Skimmer
- Kelp Pipefish
- Kelp Poacher
- Kenya Horned Viper
- Kerguelen spiny plunderfish
- Key Deer
- Killdeer
- King Eider
- King Penguin
- King Ranch bluestem
- King Vulture
- King of Wasps
- King's Skink
- King-of-the-salmon
- Kirk's Caecilian
- Kleidocerys
- Knight Anole
- Knob-billed Duck
- Knot Grass Moth
- Knysna Dwarf Chameleon
- Koala
- Komodo Dragon
- Koppie Foam Grasshopper
- Korean Crevice Salamander
- Korean Rockfish
- Krefft's Warty Frog
- Kuhne's Grass Lizard
- Kukri Snakes
- Kākāpō
- Lacanobia
- Lace Monitor
- Lacertinae
- Lacey Scorpionfish
- Lachnaia italica
- Ladder Snake
- Lagrecacanthops guyanensis
- Lake Ifni trout
- Lake Pátzcuaro Salamander
- Lake Sturgeon
- Lake Taal Snake
- Lambert's Sea Snake
- Lampyris
- Land Mullet
- Langsdorff's Coralsnake
- Lanna Green Pitviper
- Large Black Tip Wilter
- Large Crane Flies
- Large Fan-throated Lizards
- Large Pugnacious Ant
- Large Skipper
- Large White-headed Gulls
- Large Yellow Underwing
- Large-blotched Ensatina
- Largeflower Aster
- Largehead Hairtail
- Largemouth Bass
- Largetooth Conger
- Larimus
- Lasia corvina
- Laughing Dove
- Laughing Gull
- Laughing Kookaburra
- Leaf Beetles
- Leaf Katydids
- Leaf-nosed Lizard
- Leafhopper Assassin Bug
- Leafy Filefish
- Leafy Seadragon
- Leaping Blenny
- Leaproaches
- Least Bittern
- Least Chipmunk
- Least Sandpiper
- Least Weasel
- Leatherback Sea Turtle
- Leccinum
- Leopard
- Leopard Reed Frog
- Leopard Seal
- Leopard Searobin
- Leopard Tortoise
- Lepidocephalichthys
- Leptobarbus
- Lesser Black Whipsnake
- Lesser Black-backed Gull
- Lesser Dog-like Bat
- Lesser Florican
- Lesser Goldfinch
- Lesser Grasshopper
- Lesser Horseshoe Bat
- Lesser Nighthawk
- Lesser Willow Sawfly
- Lethocerus maximus
- Lethrinus
- Leucochrysa insularis
- Lewis's Woodpecker
- Liasis olivaceus olivaceus
- Lichen Katydid
- Lincoln's Sparrow
- Lindley's Aster
- Lined Gecko
- Lingcod
- Lion
- Lipotactes vietnamicus
- Lissotriton
- Little Baikal oilfish
- Little Brown Skink
- Little Bustard
- Little Devil Poison Frog
- Little Egret
- Little Gull
- Little Gurnard Perch
- Little Raven
- Little Red Flying-fox
- Little White Tellen
- Little mesquite cicada
- Littoral Glassfrog
- Lizards
- Llama
- Lobogaster paradoxus
- Loggerhead Shrike
- Long-billed Curlew
- Long-eared Owl
- Long-flange Millipede
- Long-headed Toothpick Grasshopper
- Long-horned Amazon Ant
- Long-legged Buzzard
- Long-necked Shining Fungus Beetle
- Long-nosed Dragon
- Long-nosed Fur Seal
- Long-rayed Weed Whiting
- Long-snouted Seahorse
- Long-tailed Ground Squirrel
- Long-tailed Jaeger
- Long-tailed Macaque
- Long-tailed Mouse
- Long-tailed Shrews
- Long-tailed Tit
- Long-tailed Weasel
- Long-tailed × three-lined salamander
- Longear Sunfish
- Longfin Baikal sculpin
- Longhead Grunt
- Longhorn Band-wing Grasshopper
- Longjaw Mackerel
- Longneck Croaker
- Longnose Gar
- Longnose Lancetfish
- Longsnout Boarfish
- Longspined Porcupinefish
- Longtail Mabuya
- Lorestan Newt
- Lowland Slender Squirrel
- Lowland Swamp Viper
- Lucerne Moth
- Luxilus zonatus × Miniellus nubilus
- Lycodon rufozonatus rufozonatus
- Lynch's Stubfoot Toad
- Maasai Giraffe
- Macaques
- Macarostola
- Mackerels, Tunas, Butterfishes, and Allies
- Mackerels, Tunas, and Bonitos
- Macrocheilus
- Macrocilix maia
- Macrohastina gemmifera
- Macroramphosus
- Macrothylacia
- Madagascar Coucal
- Madagascar Hoopoe
- Madtoms
- Magellanic Penguin
- Magnolia Warbler
- Magpie Perch
- Mainland American Marten
- Mainland Northern Saw-whet Owl
- Mainland Rusty-spotted Cat
- Mainland Sheoak Skink
- Mainland Western Grey Kangaroo
- Malabar Gliding Frog
- Malachite Kingfisher
- Malay Red Harlequin
- Malay Weasel
- Malaysian Rail-babbler (Malay)
- Mallard
- Mallards, Pintails, and Allies
- Mallow Sawfly
- Maltese-cross
- Maluti River Frog
- Mammals
- Manaia Pygmy Pipehorse
- Mandarin Ratsnake
- Mang Mountain Pitviper
- Mangrove Red Snapper
- Mantis
- Mantled Howler Monkey
- Many-lined Salamander
- Marabou Stork
- Marbled Beauty
- Marbled Cellar Spider
- Marbled Eel
- Marbled Godwit
- Marbled Newt
- Marbled Polecat
- Marbled Salamander
- Marbled White
- Margined Reed Frog
- Marine Iguana
- Maritime Striped Squirrel
- Marsh Dagger
- Marsh Flies
- Marsh Frog
- Marsh Greenbottle Fly
- Marsh Mongoose
- Marsh Rabbit
- Marsh Tit
- Martens
- Martial Eagle
- Marvelous Spatuletail
- Maryland Darter
- Masked Laughingthrush
- Mayotte Smooth Snake
- Meadow Brown
- Meadow Pipit
- Meadow Spittlebug
- Meadow Voles
- Mediterranean Acrobat Ant
- Mediterranean Banded Centipede
- Mediterranean Conehead Mantis
- Mediterranean Flour Moth
- Mediterranean Freshwater Crab
- Mediterranean House Gecko
- Mediterranean Katydid
- Mediterranean Moray
- Mediterranean Painted Frog
- Mediterranean Red Sea Star
- Mediterranean Slant-faced Grasshopper
- Mediterranean Spotted Chafer
- Mediterranean Tree Frog
- Mediterranean white-banded spider
- Megachile argentata
- Megachile macularis
- Megamerus alvarengai
- Megarhyssa macrurus macrurus
- Meiosimyza decempunctata
- Melanophryniscus spectabilis
- Mellinus
- Meloetyphlus fuscatus
- Merlin
- Metacrinia
- Meteorus pulchricornis
- Mexican Blindcat
- Mexican Burrowing Toad
- Mexican Free-tailed Bat
- Mexican Giant Cactus
- Mexican Giant Tree Frog
- Mexican Grass-carrying Wasp
- Mexican Mud Turtle
- Mexican Tiger Salamander
- Mexican Treehopper
- Mexican tea
- Mice, Rats, and Hamsters
- Microdon violaceus
- Microphysogobio tafangensis
- Microplana terrestris
- Middle Eastern Short-fingered Gecko
- Middle European Least Weasel
- Midland Painted Turtle
- Milesia crabroniformis
- Milkweed Assassin Bug
- Mindo Stubfoot Toad
- Minervarya
- Minor Lizard
- Mint-loving Pyrausta Moth
- Miresa fulgida
- Miroidea
- Mississippi Map Turtle
- Missouri Saddled Darter
- Moaning Frog
- Mohave Ground Squirrel
- Mojave Desert Sidewinder
- Mojave Rattlesnake
- Mole Salamander
- Mole Snake
- Molly Miller
- Molophilus
- Monarch
- Mongolian Pallas' Cat
- Monk Parakeet
- Monkey Goby
- Monocellate Cobra
- Monoceromyia ndidiae
- Monopterus
- Moor Frog
- Moorish Gecko
- Moose
- Morays
- Morimus asper
- Mormidea
- Mosaic Leatherjacket
- Mosquitofishes
- Moss Grass
- Moss Springtail
- Mossy Rose Gall Wasp
- Moth Butterfly
- Motorbike Frog
- Mount Lyell Shrew
- Mountain Bluebird
- Mountain Cottontail
- Mountain Coyote
- Mountain Goat
- Mountain Hare
- Mountain Lion
- Mountain Rain Frog
- Mountain Redbelly Dace
- Mountain Water Snake
- Mountain ghost stiletto fly
- Mournful Sphinx
- Mourning Cloak
- Mourning Dove
- Mourning Gecko
- Mozambique Tilapia
- Mozena lutea
- Mud Salamander
- Mudburrowing gobies
- Muddy Stink Bug
- Mulch Skinks
- Mule Deer
- Mullets
- Murici Lancehead
- Murines
- Muscovy Ducks
- Mushroom Gall Wasp
- Mushroom Scorpionfish
- Muskrat
- Mustache and Pygmy Snapping Ants
- Mustelids
- Mute Swan
- Mwanza Flat-headed Rock Agama
- Myrmecopsis kenedyae
- Myrtle Warbler
- Namib Giant Ground Gecko
- Namib Round-eared Sengi
- Namib Sand Gecko
- Narrow-banded Pond Fly
- Narrow-banded Spanish Mackerel
- Narrow-mouthed Frogs
- Narrow-waisted Wasps, Ants, and Bees
- Narrow-winged Tree Cricket
- Narwhal
- Naryciodes posticalis
- Nasal-flap moray
- Nasidius pulchriventris
- Nathusius' Pipistrelle
- Natterjack Toad
- Near Eastern Fire Salamander
- Necrophylus arenarius
- Neomelicharia consociata
- Neon Tetra
- Neosebastes
- Neoxylocopa
- Nepal Sacred Langur
- Neptune Beetle
- New Britain Goshawk
- New Caledonian Giant Gecko
- New Guinea Snake-lizard
- New World Bluestems
- New World Sparrows
- New World Warblers
- New Zealand Falcon
- New Zealand Giraffe Weevil
- New Zealand Glowworm
- New Zealand Pied Cormorant
- Niceforo's Marsupial Frog
- Night Parrot
- Nile Crocodile
- Nile Tilapia
- Nimble Long-limbed Salamander
- Nine-banded Armadillo
- Nine-spotted Lady Beetle
- Nine-spotted Moth
- Ninespine Stickleback
- Niphona picticornis
- Nobbi Dragon
- Noisy Miner
- Nomad
- Nomia
- Nongkhor Asian tree frog
- Nordic Jackdaw
- Nornalup Frog
- North American Freshwater Catfishes
- North American Luna Moth
- North American Minnows
- North American Mountain Lion
- North American Ocelot
- North American Peregrine Falcon
- North American Porcupine
- North American River Otter
- North American Spur-throated Grasshoppers
- North American Toads
- North American Wheel Bug
- North Atlantic Great Cormorant
- North Island Snipe
- North Pacific Humpback Whale
- Northern Barred Owl
- Northern Bobwhite
- Northern California Ringtail
- Northern Cardinal
- Northern Carmine Bee-eater
- Northern Chamois
- Northern Cottonmouth
- Northern Cricket Frog
- Northern Dancing Frog
- Northern Desert Nightsnake
- Northern Dusky Salamander
- Northern Elephant Seal
- Northern Flicker
- Northern Flying Squirrel
- Northern Hawk Owl
- Northern Hoary Bat
- Northern House Wren
- Northern Ivory-billed Woodpecker
- Northern King Cobra
- Northern Lapwing
- Northern Leopard Frog
- Northern Map Turtle
- Northern Mockingbird
- Northern Pacific Rattlesnake
- Northern Paper Wasp
- Northern Parula
- Northern Pike
- Northern Pintail
- Northern Rainfrogs
- Northern Red-legged Frog
- Northern Rough Greensnake
- Northern Rubber Boa
- Northern Saw-whet Owl
- Northern Scarletsnake
- Northern Seahorse
- Northern Short-tailed Shrew
- Northern Shovel-nosed Salamander
- Northern Shoveler
- Northern Spectacled Salamander
- Northern Two-lined Salamander
- Northern Walkingstick
- Northern Watersnake
- Northern Waterthrush
- Northern Wheatear
- Northern White-breasted Hedgehog
- Northern White-tailed Deer
- Northern Whiting
- Northern Yellow Warbler [aestiva]
- Northern Zigzag Salamander
- Northwest African Cheetah
- Northwestern Alligator Lizard
- Northwestern Salamander
- Nose-horned Viper
- Nosy Pill Woodlouse
- Notosacantha echinata
- Nut Leaf Blister Moth
- Nutria
- Nutting's Flycatcher
- Nyala
- Nyctemera lacticinia
- Nygmia plana
- Oak Marble Gall Wasp
- Oak Titmouse
- Oakworm Moths
- Obama Flatworm
- Oblong Lady Beetles
- Oblong-winged Katydid
- Obscure Bird Grasshopper
- Ocellaris Anemonefish
- Ocellated Bronze Skink
- Ochre Bush Squirrel
- Ochre Sea Star
- Oebalus
- Oecanthus longicauda
- Oenoptera albimacula
- Oenpelli Rock Python
- Oiketicinae
- Okanagana arctostaphylae
- Okinawa Tree Lizard
- Old Wife
- Old World Mice and Rats
- Old World Swallowtail
- Oligolepis stomias
- Olive Baboon
- Olive-headed Sea Snake
- Omilteme Cottontail
- Omiza lycoraria
- Ommatoiulus rutilans
- Ommatotriton ophryticus × nesterovi
- One-toed Amphiuma
- Onefin Flashlightfish
- Onion eye
- Oophaga
- Ophion
- Opisthoplatia
- Opsiphanes
- Orange Ladybird
- Orange Swift
- Orange-crowned Warbler
- Orange-dashed Goby
- Orange-spined Drone Fly
- Orange-spotted Trevally
- Orangebarred Puffer
- Orangespotted Sunfish
- Orangethroat Darter
- Orca
- Ord River Mullet
- Oreaeschna dictatrix
- Orectognathus szentivanyi
- Oregon Spotted Frog
- Orejuela's Glassfrog
- Orfe
- Oriental Blue Clearwing
- Oriental Darter
- Oriental Fire-bellied Toad
- Oriental Flying Gurnard
- Oriental Forest Lizards
- Oriental Garden Lizard
- Oriental House Rat
- Oriental Magpie-Robin
- Oriental Rat Snake
- Oriental Weatherfish
- Ornate Cowfish
- Ornate Ghostpipefish
- Ornate Spiny Lizard
- Ornate Velvet Gecko
- Ornate Wrasse
- Orthometopon dalmatinum
- Osmylops
- Osprey
- Ota's Japalure
- Ota's stream tree frog
- Ovalimantis maculata
- Owlet Moths and Allies
- Owlflies
- Oxyelaea elegans
- Oxyeleotris
- Ozark Cavefish
- Pachylis acutangulus
- Pachyrhynchus congestus pavonius
- Pacific Barreleye
- Pacific Blackdragon
- Pacific Blue Eye
- Pacific Chub Mackerel
- Pacific Footballfish
- Pacific Gopher Snake
- Pacific Herring
- Pacific Ringneck Snake
- Pacific Spiny Lumpsucker
- Pacific Stargazer
- Pacific Viperfish
- Pacific chorus frog
- Padanian Goby
- Paddy Field Frog
- Paddyfield Pipit
- Painted Batagur
- Painted Bronzeback
- Painted Bunting
- Painted Comber
- Painted Ensatina
- Painted Frogfish
- Painted Handmaiden Moth
- Painted Lady
- Painted Reed Frog
- Painted Tiger Moth
- Painted Tree Frog
- Painted Turtle
- Painted Wood Turtle
- Paisa Frog
- Pale Green Assassin Bug
- Pale Snipe Eel
- Pale-flecked Garden Sunskink
- Palearctic and African Small Cats
- Palestine Viper
- Palette Tang
- Pallas' Cat
- Pallas' Squirrel
- Palm Squirrels
- Panama Spotted Night Snake
- Panamanian Golden Frog
- Panaqolus
- Panchlora kozaneki
- Panda Ant
- Pangasius
- Panther Flounder
- Papuan Frogmouth
- Parachaenichthys charcoti
- Paradise Flying Snake
- Paradise Shelduck
- Paralastor
- Paraleptophlebia
- Paraphanius mentoides
- Parasa viridogrisea
- Parasitic Jaeger
- Parasol
- Paratanakia
- Parum
- Pascagoula Dusky Salamander
- Paspalum
- Patch-nosed Salamander
- Peace Delma
- Peacock Brenthia Moth
- Peale's Dolphin
- Pearl Crescent
- Pearl Moths
- Pectoral Sandpiper
- Peking Gecko
- Pelagic Anglerfishes
- Pelagic Porcupinefish
- Pelicans, Herons, Ibises, and Allies
- Penicillidia conspicua
- Peninsula Moss Frog
- Pennant-winged Nightjar
- Penthicodes astraea
- Peppered Moray
- Perau de Janeiro Redbelly Toad
- Perching Birds
- Peregrine Falcon
- Perentie
- Peringuey's Adder
- Perola sericea
- Peron's Tree Frog
- Peronomyrmex
- Persian Leopard
- Pestle Puffball
- Pethia
- Petroscirtes
- Phainopepla
- Phanaeus tridens
- Phaonia
- Philoscia affinis
- Phreatobius
- Phyllira Tiger Moth
- Phyllocnistis insignis
- Phyllognathus excavatus
- Phyllomorpha lacerata
- Phytalmia cervicornis
- Phytalmia mouldsi
- Phytomyza
- Picasso Bug
- Picripleuroxus denticulatus
- Piebald Madtom
- Pied Avocet
- Pied Bat
- Pied Wagtail
- Pied-billed Grebe
- Pig Frog
- Pikachu Moth
- Pike Icefish
- Pileated Woodpecker
- Pin-tailed Whydah
- Pine Carpet
- Pine Woods Tree Frog
- Pink Clingfish
- Pink Fairy Armadillo
- Pink Snout Moth
- Pinocchio Anole
- Pioneer White
- Pipevine Swallowtail
- Piping Plover
- Pistachio Emerald
- Pit Vipers
- Placental Mammals
- Plagiocephalus latifrons
- Plagiometriona clandestina
- Plain-bellied Watersnake
- Plain-tailed Hanging Thief
- Plains Zebra
- Plains-wanderer
- Plantain Squirrel
- Platyaspistes venustus
- Pleistodontes froggatti
- Plovers and Lapwings
- Plum Fruit Moth
- Podarcis
- Podarcis lusitanicus
- Polar Bear
- Polka-dot Batfish
- Polka-dot Tree Frog
- Polyphemus Moth
- Pomarine Jaeger
- Pompanos
- Pond Olive
- Pond Slider
- Pond Spreadwings
- Pond and Box Turtles
- Pool Frog
- Popayan Marsupial Frog
- Poplar Kitten
- Poppea formosa
- Porcellionides myrmecophilus
- Portuguese Fire Salamander
- Powder Blue Isopod
- Power's Rain Frog
- Praesusica placerodes
- Praini
- Prevost's Squirrel
- Pricklenapes
- Prickly Pears
- Princely Tiger Moth
- Proculini
- Pronghorn
- Prosapia
- Prosoplecta semperi
- Protoxodera monstrosa
- Prussian Carp
- Przewalski's Horse
- Psalidognathus friendii
- Pseudacanthops caelebs
- Pseudocephalelus bleusei
- Pseudosphex laticincta
- Psilodera fasciata
- Psilodera valida
- Psychopsis mimica
- Ptenothrix alveola
- Ptenothrix maculosa
- Puff Adder
- Puffers and Filefishes
- Pugnosed Tree Frog
- Pumpkinseed
- Purple Allamanda
- Purple Finch
- Purple Frog
- Purple woodsorrel
- Puss Moth
- Pyburn's Pancake Frog
- Pycnarmon
- Pycnopsyche antica
- Pygmy Blue Whale
- Pygmy Hippopotamus
- Pygmy Marbled Newt
- Pygmy Seahorse
- Pygmy Short-horned Lizard
- Pygmy White-toothed Shrew
- Pygmy Whitefish
- Pygopleurus koniae
- Pyramid Ants
- Père David's Rock Squirrel
- Qinling Giant Panda
- Queen
- Queen Alexandra's Birdwing
- Queenfishes
- Quokka
- Rabbitfishes
- Rabbs' Fringe-limbed Treefrog
- Rain Frogs
- Rainbow Lorikeet
- Rainbow Mantis
- Rainbow Scarab
- Rainbow Skink
- Rainbow Skinks
- Rainbow Trout
- Ramadasa plumbeola
- Rambur's Forktail
- Rankinia
- Rattlesnakes
- Rattling Froglet
- Ravine Salamander
- Rawlinsonia
- Ray-finned Fishes
- Razzauti's Woodlouse
- Red Admiral
- Red Chilocorus
- Red Clover
- Red Deer
- Red Devil Cichlid
- Red Diamond Rattlesnake
- Red Drum
- Red Fox
- Red Hake
- Red Handfish
- Red Jewel Bug
- Red Junglefowl
- Red Kite
- Red Morwong
- Red Panda
- Red Porgy
- Red Salamander
- Red Sand Boa
- Red Spitting Cobra
- Red Swamp Crayfish
- Red Wolf
- Red Worm Lizard
- Red-backed Poison Frog
- Red-banded Leafhopper
- Red-banded Snake
- Red-bellied Black Snake
- Red-bellied Newt
- Red-bellied Squirrel
- Red-billed Chough
- Red-bodied Swallowtails
- Red-breasted Nuthatch
- Red-cockaded Woodpecker
- Red-crowned Woodpecker
- Red-eared Slider
- Red-eyed Tree Frog
- Red-headed Bush Cricket
- Red-headed Woodpecker
- Red-legged Cormorant
- Red-legged Honeycreeper
- Red-legged Pademelon
- Red-legged Wot-wot
- Red-lipped Batfish
- Red-lipped Snake
- Red-mouthed Goby
- Red-necked Nightjar
- Red-necked Wallaby
- Red-shouldered Hawk
- Red-spotted Garter Snake
- Red-spotted Toad
- Red-tailed Hawk
- Red-tailed Squirrel
- Red-whiskered Bulbul
- Red-winged Blackbird
- Redbelly Tilapia
- Redear Sunfish
- Redfin Butterflyfish
- Redhead
- Redmouth Grouper
- Redpoll
- Redside Dace × Creek Chub
- Redspotted Sunfish
- Redtail Catfish
- Reed Bunting
- Reeves's Muntjac
- Regal Horned Lizard
- Regalecus
- Remora
- Resplendent Cochran Frog
- Resplendent Quetzal
- Resplendent Shrubfrog
- Reticulated Flatwoods Salamander
- Reticulated Giraffe
- Reticulated Poison Frog
- Reticulated Python
- Reticulated Siren
- Rhabdophis lateralis
- Rhabdopterus
- Rhesus Macaque
- Rhinella ruizi
- Rhinoceros Beetles
- Rhinoceros Viper
- Rhinogobies
- Rhinolophoid Bats
- Rhombic Skaapsteker
- Rhynchocypris
- Rhyncomya
- Rhypotoses
- Ribbed Millipede Undertaker
- Ribbon Eel
- Ribbon Seal
- Ribbonwood Fungus Weevil
- Rice Frogs
- Rice Stink Bug
- Rice field frog
- Rice's Whale
- Richardia advena
- Richardson's Ground Squirrel
- Riggenbach's Reed Frog
- Rim Rock Crowned Snake
- Rineloricaria melini
- Ring-billed Gull
- Ring-legged Earwig
- Ring-necked Duck
- Ring-necked Pheasant
- Ring-necked Snake
- Ringed Seal
- Ringed Tortoise Beetle
- Ringleg Black Millipede
- Ringtail
- Rinkhals
- Rio Chingual Valley tree frog
- Rio Negro Silky Anteater
- Rio Pescado Stubfoot Toad
- Risso's Dolphin
- River Eels
- Rivero's Toad
- Rize River Trout
- Roadside Hawk
- Robust Ctenotus
- Rock Cale
- Rock Flathead
- Rock Hyrax
- Rock Ling
- Rock Pigeon
- Rock Squirrel
- Rocky Mountain Locust
- Rocky Mountain Mule Deer
- Rodents
- Rook
- Ropalidia marginata
- Rose-breasted Grosbeak
- Rose-ringed Parakeet
- Roseate Spoonbill
- Rosy Maple Moth
- Rosyside Dace
- Rottnest Island Dugite
- Rough Greensnake
- Rough Leatherjacket
- Rough-skinned Newt
- Roughened Darkling Beetle
- Round Bullet Gall Wasp
- Round Goby
- Round-tailed Ground Squirrel
- Roundtail Horned Lizard
- Rovella
- Royal Goliath Beetle
- Royal Gramma
- Royal Tern
- Rubber Eel
- Ruby-crowned Kinglet
- Ruby-throated Hummingbird
- Ruby-throated and Black-chinned Hummingbirds
- Ruddy Duck
- Ruddy Tree Frog
- Ruddy Turnstone
- Ruffed Grouse
- Rufous Hummingbird
- Rufous-chested Tanager
- Rufous-tailed Jacamar
- Rusa Deer
- Russell's Oarfish
- Russell's Viper
- Russian Desman
- Russian Saiga
- Rusty Tussock Moth
- Sabethes cyaneus
- Sacred flower of the Incas
- Saddled Seabream
- Sahara Frog
- Sahara Sand Viper
- Sailfin Catfishes
- Sailfish
- Sakhalin Sturgeon
- Salamanderfish
- Salamandra algira atlantica
- Salema Porgy
- Salt Marsh Moth
- Saltwater Crocodile
- Salty Earth Snake
- Sambar
- San Bernardino Ringneck Snake
- San Diego Alligator Lizard
- San Francisco Garter Snake
- San Joaquin Coachwhip
- Sand Rain Frog
- Sanderling
- Sandhill Crane
- Sangay Shrew Opossum
- Saola
- Sarawak Keelback
- Sarcopyramis
- Sargassumfish
- Sargo
- Saropogon hyalinus
- Saskatoon
- Satin White Palpita
- Sauter's Brown Frog
- Savannah Sparrow
- Savi's Pipistrelle
- Say's Phoebe
- Scaled Stargazer
- Scalloped Ribbonfish
- Scaly-breasted Munia
- Scalyfin
- Scalyfins
- Scaphura nigra
- Scarabs
- Scarabs, Stag Beetles, and Allies
- Scarce Swallowtail
- Scarlet Kingsnake
- Schismatogobius marmoratus
- Schistophleps
- Schistura oedipus
- Schlegel's Green Tree Frog
- Schmidt's Cocktail Ant
- Sciapodinae
- Sciocoris sulcatus
- Scioto Madtom
- Scissor-tailed Flycatcher
- Scomber
- Scombrinae
- Scrub Hare
- Scrub Tanager
- Scudder's Bush Katydids
- Sea Mullet
- Sea Otter
- Sea Tadpole
- Seahorses
- Seal Salamander
- Searobins
- Seaside Dragonlet
- Secret Toadhead Agama
- Sedge Warbler
- Seep Frog
- Selandriinae
- Semyrilla lineata
- Senator Wrasse
- Sergeant Majors
- Serrated fan-throated lizard
- Serval
- Seven-spotted Lady Beetle
- Sevenfingered Threadfin
- Shaded Fuzzy Ant
- Shaggy Mane
- Shanghai Elegant Skink
- Sharksucker
- Sharp-shinned Hawk
- Sharpbelly
- Sharphead Darter
- Sharptooth Catfish
- Shasta Alligator Lizard
- Shaw's Cowfish
- Shellbark Hickory
- Shelley's Eagle-Owl
- Sherman's Fox Squirrel
- Shingleback
- Shiras Moose
- Short Bigeye
- Short-beaked Echidna
- Short-billed Gull
- Short-eared Dog
- Short-eared Owl
- Short-finned Eel
- Short-finned Pilot Whale
- Short-tailed Mamushi
- Short-tailed Shrews
- Short-tailed Snake
- Shorthead Seahorse
- Shortnosed Kauri Weevil
- Shovelnose Sturgeons
- Shrews
- Shuttles Hoppfish
- Siamese Blue Crested Lizard
- Siamese Fighting Fish
- Siamese Fireback
- Siamusotima aranea
- Siberian Chipmunk
- Siberian Rubythroat
- Siberian Salamander
- Siberian Weasel
- Sickle-bearing Bush-cricket
- Sidewalk tiger beetle
- Sierra Nevada Mountain Beaver
- Sierra Nevada Snowshoe Hare
- Sierra Newt
- Sika Deer
- Silk-Button Spangle Gall Wasp
- Silky Cuscus
- Silver Catfish
- Silver Redhorse
- Silver Spiny Sugar Ant
- Silver Sweep
- Silver Trevally
- Silver-spotted Skipper
- Silver-tailed Petalcutter
- Silver-washed Fritillary
- Silvery Checkerspot
- Sinobdella sinensis
- Sinocyclocheilus microphthalmus
- Sinopodisma
- Sinuated Spoonwing
- Sipalinus gigas
- Siphona
- Six-spotted Orbweaver
- Sixspine Leatherjacket
- Skilton's Skink
- Skinks
- Slate-colored Junco
- Slaty Skimmer
- Sleepy Cod
- Slender Gars
- Slender Mola
- Slender Mudskipper
- Slender Spreadwing
- Slender-billed Curlew
- Slimy Snailfish
- Slingjaw Wrasse
- Sloane's Viperfish
- Sloe Bug
- Slug Caterpillar Moths
- Small Cats
- Small Copper
- Small Heath
- Small Milkweed Bug
- Small White
- Smeared Dagger
- Smileyface Lady Beetle
- Smokybrown Cockroach
- Smooth Knob-tailed Gecko
- Smooth Lumpsucker
- Smooth Newt
- Smooth Snake
- Smooth Trunkfish
- Smooth-billed Ani
- Smooth-head Blobfish
- Snaggle-toothed Snake Eel
- Snail Suckers
- Snail-eaters
- Snail-eating Turtles
- Snake-eyed Skinks
- Snakes
- Snakes and Lizards
- Sneaky African Fig Wasp
- Snipe Flies and Allies
- Snoek
- Snow Bunting
- Snow Leopard
- Snowshoe Hare
- Snowy Egret
- Snowy Owl
- Snubnose Dart
- Social Flycatcher
- Sockeye Salmon
- Solenosthedium bilunatum
- Solomon Islands Skink
- Solomons Small-eyed Snake
- Somber Carpet Moth
- Song Sparrow
- Song Thrush
- Sonoran False Brook Salamander
- Sonoran Gopher Snake
- Sooty Longwing
- South American Coati
- South American Common Toad
- South American Sea Lion
- South Australian Cobbler
- South China Giant Salamander
- South Florida Mole Kingsnake
- South Island Rifleman
- South Island Takahē
- South Polar Skua
- Southeast Asian Bockadam
- Southeastern Australasian Swamphen
- Southern Aardwolf
- Southern African Crocodile
- Southern African Dwarf Chameleons
- Southern Alligator Lizard
- Southern Bald Eagle
- Southern Bell Frog
- Southern Black Rhinoceros
- Southern Brown Bandicoot
- Southern Brown Tree Frog
- Southern Bushbuck
- Southern California Slender Salamander
- Southern Cavefish
- Southern Cricket Frog
- Southern Death Adder
- Southern Elephant Seal
- Southern Fanfish
- Southern Festoon
- Southern Flying Squirrel
- Southern Giraffe
- Southern Greater Kudu
- Southern Green Stink Bug
- Southern Humpback Whale
- Southern Knysna Turaco
- Southern Kori Bustard
- Southern Leopard Frog
- Southern Lion
- Southern Malachite Sunbird
- Southern Marbled Gecko
- Southern Meat Ant
- Southern Opossum
- Southern Pacific Rattlesnake
- Southern Pill Woodlouse
- Southern Purple-spotted Gudgeon
- Southern Pygmy Leatherjacket
- Southern Red-throated Rainbow Skink
- Southern Redbelly Dace × Creek Chub
- Southern Right Whale Dolphin
- Southern Ringneck Snake
- Southern Rock Agama
- Southern Serval
- Southern Smooth Snake
- Southern Springhare
- Southern Three-banded Armadillo
- Southern Toad
- Southern Turniptail Gecko
- Southern Two-lined Salamander
- Southern Vine Snake
- Southern Water Skink
- Southern White-lipped Python
- Southern and Eastern African Caracal
- Southern and Eastern African Cheetah
- Southwestern Rock Skink
- Southwestern Shingleback
- Southwestern Snake-necked Turtle
- Southwestern Speckled Rattlesnake
- Spade-toothed Beaked Whale
- Spaminta minjerribae
- Spanish Moon Moth
- Spanish Sparrow
- Spanish Wall Lizard
- Sparganothis Fruitworm Moth
- Speckled Black Salamander
- Speckled Bush-cricket
- Speckled Forest Pit Viper
- Speckled Wood
- Spectacled Bear
- Spectacled Caiman
- Spectacled Eider
- Sperm Whale
- Sphinx Moths
- Sphiximorpha rachmaninovi
- Spider-tailed Horned Viper
- Spilosomina
- Spilostethus saxatilis
- Spinejawed Snakes
- Spiny Toad
- Spiny-rayed fishes
- Spinycheek Lanternfish
- Spittlebugs and Froghoppers
- Spix's Disk-winged Bat
- Spix's Macaw
- Spot-legged Tree Frog
- Spot-lined Flasher Wrasse
- Spotfin Chub
- Spotted Apatelodes Moth
- Spotted Archerfish
- Spotted Barking Gecko
- Spotted Bat
- Spotted Boxfish
- Spotted Cucumber Beetle
- Spotted Fire Salamander
- Spotted Flycatcher
- Spotted Forest Skink
- Spotted Galaxias
- Spotted Harlequin Snake
- Spotted House Gecko
- Spotted Hyena
- Spotted Lanternfly
- Spotted Marsh Frog
- Spotted Painted Reedfrog
- Spotted Pim
- Spotted Porcupinefish
- Spotted Salamander
- Spotted Sandpiper
- Spotted Sicklefish
- Spotted Snout-Burrower
- Spotted Tongue-sole
- Spotted Towhee
- Spotted rubber frog
- Spotted-tailed Quoll
- Spotty Conehead Mantid
- Spring Peeper
- Springbok
- Spun Glass Slug Moth
- Squaretail Mullet
- Squirrel Treefrog
- Squirrels
- Sri Lanka Weevil
- Sri Lankan Brown Fish Owl
- Sri Lankan Relict Ant
- St. Dabeoc's heath
- St. John's worts
- Stagmomantis
- Star jasmine
- Stargazer Snake Eel
- Starry Night Harlequin Toad
- Starry Puffer
- Starry blenny
- Stauffer's Tree Frog
- Steenbok
- Stefania ginesi
- Steller Sea Lion
- Steller's Jay
- Steller's Sea-Eagle
- Steller's × Blue Jay
- Sterlet
- Stick Insects
- Stigmella caryaefoliella
- Stigmella intermedia
- Stingless Bees
- Stink Lacewings
- Stiphodon julieni
- Stippled Darter
- Stippled Spoon-nose Eel
- Stone Loach
- Stone Marten
- Stratiomys
- Strauch's Toad Agama
- Strawberry Poison Dart Frog
- Strawberry Rain Frog
- Stresemann's Bristlefront
- Striate Anglerfish
- Striated Heron
- Strigoderma
- Stripe-winged Grasshopper
- Striped Bronzeback
- Striped Burrfish
- Striped Field Mouse
- Striped Hyaena
- Striped Marlin
- Striped Millipede
- Striped Red Mullet
- Striped Skink
- Striped Skunk
- Striped Snakehead
- Striped Stone Loach
- Succinea-group Thief Ants
- Suckermouth Catfishes
- Sulawesi Moon Moth
- Sulawesi Sailfin Lizard
- Sulphogaeana sulphurea
- Summer Tanager
- Sunbleak
- Sunda King Cobra
- Sunda Tiger
- Suni
- Sunira
- Superb Large Fan-throated Lizard
- Superb Lyrebird
- Superb Starling
- Surf Scoter
- Suwannee Alligator Snapping Turtle
- Swainson's Hawk
- Swallow-tailed Kite
- Swallows and Martins
- Swamp Blue-eye
- Swamp Milkweed Leaf Beetle
- Swamp Rabbit
- Swamp Sparrow
- Swamp Wallaby
- Sweet Gale Moth
- Sweet Potato Armyworm Moth
- Swift Woodlouse
- Swinhoe's Striped Squirrel
- Swinhoe's frog
- Sword-bearing Conehead
- Sword-billed Hummingbird
- Sylvia's Tree Frog
- Symmerista
- Syncirsodes primata
- Syntherata
- São Tomé Caecilian
- Table Mountain Ghost Frog
- Tago's Brown Frog
- Taiga Merlin
- Tailless Tenrec
- Taiwan Bitterling
- Taiwan Common Toad
- Taiwan Horse Mouth
- Taiwan Japalure
- Taiwan Torrent Carp
- Taiwan Whipping Frog
- Taiwanese Dwarf Dragon Goby
- Talanthia phalangium
- Tamaulipan Milksnake
- Tananá
- Tangerine Darter
- Tapanuli Orangutan
- Tarahumara Frog
- Tarahumara Salamander
- Target Longhorn Beetle
- Tasmanian Masked Owl
- Tatra Chamois
- Tawny Coster
- Tawny Pinion
- Taylor's Leaf Frog
- Teak
- Telmatobius mendelsoni
- Temple Tree Frog
- Tenerife Lizard
- Tennessee Shiner
- Tennessee Warbler
- Terciopelo
- Terrestrial Arboreal Alligator Lizard
- Tessellated Water Snake
- Tetramorium fulviceps
- Texas Coralsnake
- Texas White-tailed Deer
- Thamnaconus
- Thaumatomyrmex mutilatus
- Therians
- Thericlesiella meridionalis
- Thick-billed Raven
- Thick-tailed Barking Gecko
- Thick-tailed Pygmy Jerboa
- Thicklip Grey Mullet
- Thingvallavatn Char
- Thirteen-lined Ground Squirrel
- Thoas Swallowtail
- Thorny Devil
- Thorny Tree Frog
- Thread Pipefish
- Threadfin Breams
- Three-banded Mabuya
- Three-toed Amphiuma
- Threespot Angelfish
- Tibetan Wolf
- Ticking Frog
- Tiger
- Tiger Cardinalfish
- Tiger Keelback
- Tiger Snake
- Tiger-Striped Wasp Moth
- Tilapias
- Timber Rattlesnake
- Tinfoil Barb
- Tiny Night Snake
- Tipula rufina
- Titan Beetle
- Titicaca Water Frog
- Tits, Chickadees, and Titmice
- Toco Toucan
- Tonga Escolar
- Topi
- Topmouth Gudgeon
- Tortoises
- Tortoiseshells
- Tortricine Leafroller Moths
- Tosa Beardie
- Townsend's Chipmunk
- Townsend's Warbler
- Toxicodendron sylvestre
- Toxodera integrifolia
- Toxomerus mosaicus
- Toxorhinus amarillo
- Trachipterus
- Tragocephala variegata
- Trametes pubescens
- Transcaucasian Giant Mantis
- Translucent Oak Gall Wasp
- Transvaal Klipspringer
- Transverse-banded Flower Fly
- Tree Squirrels
- Tree Swallow
- Treetop Bush Katydid
- Tricentrus convergens
- Trichochrysea hirta
- Tricolor Sharkminnow
- Tricolored Bumble Bee
- Tricolored Heron
- Trigonophorus rothschildi
- Triplefins
- Trooping Funnel
- Tropical Gnatcatcher
- Tropical Kingbird
- Tropical Royal Flycatcher
- True Goshawks and Allies
- True Horse Flies
- True Loaches
- True Mahseers
- True Sparrows
- True Swans
- Tufted Duck
- Tufted Titmouse
- Turkey Vulture
- Turkish Snail
- Turquoise-browed Motmot
- Turtle Frog
- Turtleshell Scale
- Twelve-wired Bird-of-Paradise
- Twenty-spotted Lady Beetle
- Two-faced Toadfish
- Two-lined Spittlebug
- Two-striped Grasshopper
- Two-toed Earless Skink
- Two-wing flyingfishes
- Twofin Flashlightfish
- Typhlachirus lipophthalmus
- Typical Cardinals
- Typical Carps
- Typical Crane Flies
- Typical Froglets
- Typical Frogs
- Typical Geckos
- Typical Hawks and Harriers
- Typical Sculpins
- Typical Squirrels
- Uakari Poison Frog
- Ueno's Brown Frog
- Ultramarine Lorikeet
- Ululodes
- Umbelligerus woldai
- Umbrella Paper Wasps
- Undulated Moray
- Unstable Paper Wasp
- Upeneichthys
- Upper Yenisei Grayling
- Ural Owl
- Uropelma formosum
- Urutu Lancehead
- Usambara Eyelash Viper
- Vagrant Darter
- Vampire Ground-Finch
- Van Denburgh's Ground Skink
- Vaquita
- Variable Clown Tree Frog
- Variable Harlequin Frog
- Variable Hawk
- Variable Oystercatcher
- Variegate Darter
- Variegated Fritillary
- Variegated Squirrel
- Vegas Valley Leopard Frog
- Velvet-footed Tap
- Vermiculated Tree Frog
- Vermilion Flycatcher
- Vervet Monkey
- Vespa velutina nigrithorax
- Vesper Bats
- Victoria Crowned-Pigeon
- Vietnamese Mossy Frog
- Village Weaver
- Vinaceous Pachyiulus
- Vine-leaf Vagrant
- Violet Carpenter Bee
- Viper moray
- Vireos
- Virginia Opossum
- Virginia Rail
- Vivid Dancer
- Vogelkop Lophorina
- Voles, Lemmings, and Muskrats
- Vulturine Guineafowl
- Wager's stream frog
- Wagler's Pit Viper
- Wahlberg’s Striped Skink
- Waiter Daggerwing
- Walia Ibex
- Wall Brown
- Walnut Sphinx
- Wandering Glider
- Wang’s Garden Lizard
- Wapiti
- Warmouth × Redear Sunfish
- Warrior Bass
- Warty Anglerfish
- Warty Prowfish
- Wasp Leafhoppers
- Water Frogs
- Water Opossum
- Water Skinks
- Water Springtail
- Water, Rove, Scarab, Long-horned, Leaf, and Snout Beetles
- Waterbuck
- Waterfall-climbing Cave Fish
- Wavy Mucksucker
- Waxy Monkey Treefrog
- Weakly-keeled Ocellate Rove Beetle
- Weasels
- Webb's Kingsnake
- Weddell Seal
- Weedy Seadragon
- Weeping Toadfish
- Wels Catfish
- West Indian Manatee
- West Virginia Spring Salamander
- Western Argus Monitor
- Western Australian Salmon
- Western Banjo Frog
- Western Barn Owl
- Western Black Widow
- Western Bluebird
- Western Bluntnose Flyingfish
- Western Bobcat
- Western Capercaillie
- Western Cattle-Egret
- Western Coachwhip
- Western Conifer Seed Bug
- Western Deer Mouse
- Western Diamond-backed Rattlesnake
- Western Domestic Dog
- Western Fence Lizard
- Western Gray Squirrel
- Western Green Lizard
- Western Grey Heron
- Western Grey Kangaroo
- Western Gull
- Western Honey Bee
- Western Lesser Siren
- Western Long-beaked Echidna
- Western Marsh Harrier
- Western Milksnake
- Western Montpellier Snake
- Western Mosquitofish
- Western Paper Wasp
- Western Polecat
- Western Pond Turtle
- Western Pygmy Possum
- Western Rainbow Boa
- Western Red-backed Salamander
- Western Rock Sengi
- Western Rock Skink
- Western Roe Deer
- Western Tanager
- Western Tiger Salamander
- Western Toad
- Western Top End Dtella
- Western Tree Frog
- Western Wood-Pewee
- Western Yellow-bellied Racer
- Western tent tortoise
- Westslope Cutthroat Trout
- Whimbrel
- Whipsnakes
- Whiptail Wallaby
- White Damsel
- White Ibis
- White Olm
- White Peacock
- White Plume Moth
- White Rhinoceros
- White Satyr
- White Underwing
- White Wagtail
- White Witch
- White-bellied Barn Swallow
- White-bellied Reed Snake
- White-browed Woodpecker
- White-crested Elaenia
- White-crowned Sparrow
- White-eyed Moray
- White-footed Mouse
- White-horned Horntail
- White-legged Damselfly
- White-lined Sphinx
- White-lipped Island Pitviper
- White-lipped Pit Viper
- White-necked Rockfowl
- White-nosed Coati
- White-spotted Ground Gecko
- White-spotted Puffer
- White-spotted Slimy Salamander
- White-tailed Antelope Squirrel
- White-tailed Deer
- White-tailed Jackrabbit
- White-throated Dipper
- White-throated Kingfisher
- White-throated Sparrow
- White-throated monitor
- White-winged Coot
- White-winged Dove
- Whitecheek Monocle Bream
- Whooper Swan
- Widow Skimmer
- Wilcox's Frog
- Wild Boar
- Wild Turkey
- Willet
- Willow Beauty
- Willow Tit
- Willow Warbler
- Wilson's Bird-of-Paradise
- Wilson's Warbler
- Winged and Once-winged Insects
- Wolf Eel
- Wolf Snakes and Bridal Snakes
- Wolverine
- Wolves and Dogs
- Wood Crane Longhorn-beetle
- Wood Duck
- Wood Frog
- Woodhouse's Toad
- Wrinkled Frog
- Wuyi Sharp-nosed Frog
- Wuyi torrent frog
- Wyoming Toad
- Xanthanomoea munroi
- Xantus' Spiderling
- Xeniinae
- Xestia
- Xinjiang toad
- Xyrichtys
- Yacare Caiman
- Yaeyama Kajika Frog
- Yangtze Giant Softshell Turtle
- Yazoo Darter
- Yellow Blunt-headed Tree Snake
- Yellow Boxfish
- Yellow Cururu Toad
- Yellow Garden Spider
- Yellow Tang
- Yellow Treefrog
- Yellow Underwings
- Yellow Warbler
- Yellow-Spotted Keelback
- Yellow-bellied House Snake
- Yellow-bellied Marmot
- Yellow-bellied Sapsucker
- Yellow-bellied Sea Snake
- Yellow-bellied Three-toed Skink
- Yellow-bellied Water Skink
- Yellow-billed Kite
- Yellow-chevroned Parakeet
- Yellow-crested Helmetshrike
- Yellow-crowned Night Heron
- Yellow-edged Lyretail
- Yellow-eyed Ensatina
- Yellow-faced Whipsnake
- Yellow-legged Hornet
- Yellow-legged Mud-dauber Wasp
- Yellow-legged Pachyiulus
- Yellow-pine Chipmunk
- Yellow-rumped Warbler
- Yellow-tailed Black Cockatoo
- Yellow-wattled Lapwing
- Yellow-winged Bat
- Yelloweye Mullet
- Yellowfin Bream
- Yellowfin Madtom
- Yellowhammer
- Yellowhead Jawfish
- Yellowmargin Moray
- Yellowmouth Moray
- Yellowspotted Scorpionfish
- Yellowstripe Scad
- Yellowtail Kingfish
- Yonahlossee Salamander
- Yucatan Jay
- Yucatán Casque-headed Tree Frog
- Zaimeng Lake Crocodile Newt
- Zebra Dove
- Zebra Lionfishes
- Zebra Seahorse
- Zebrafish
- alder buckthorn
- aloe vera
- alpine golden buckwheat
- american witch-hazel
- balsam fir
- barnyardgrass
- barred grass snake
- batwing rattlesnake
- bearberry
- birch polypore
- black mulberry
- blue elder
- box elder
- brighteyes
- brittlegills
- broadleaf cattail
- buckeyes and horse-chestnuts
- calico aster
- carnea-group Green Lacewings
- chokecherry
- coast redwood
- common blue violet
- common evening-primrose
- common hackberry
- common jewelweed
- creeping juniper
- creeping thistle
- cutleaf teasel
- dicots
- eggplant horned planthopper
- false foxgloves
- fatal dapperling
- fetid goosefoot
- field maple
- foxglove beardtongue
- goldenrods
- grass snake
- ground-ivy
- horsetails
- ivy-leaved morning-glory
- joint-toothed mosses
- little nest polypore
- mock strawberry
- musk mallow
- netleaf oak
- oaks
- oleasters
- onions
- panicled aster
- pellitory-of-the-wall
- pointed centrolepis
- powell's amaranth
- purpletop tridens
- red sand-verbena
- ripsaw catfish
- rocksucker
- rose evening primrose
- round-leaved boneset
- saffrondrop bonnet
- slender false foxglove
- sow thistles
- sweet acorn oak
- tree-of-heaven
- tropical horseweed
- water forget-me-not
- western sea bristletail
- whipping frogs
- white-edged rockfish
- winged gliding frog
- wood horsetail
- woodland lettuce
- yellow archangel
- ʻAkohekohe
- ʻIʻiwi