What are some animals that begin with the letters A-Z?

A:

• Aardvark
• Aardwolf
• Abalone
• Abyssinian cat
• Abyssinian ground hornbill
• Acacia rat
• Achilles tang
• Acorn barnacle
• Acorn weevil
• Acorn woodpecker
• Acouchi (rodent resembling a squirrel)
• Adams stag-horned beetle
• Addax
• Adder
• Adelie penguin
• Admiral
• Admiral butterfly
• Adouri
• African augur buzzard
• African bush viper
• African civet
• African clawed frog
• African elephant
• African fish eagle
• African golden cat
• African ground hornbill
• African harrier hawk
• African hornbill
• African jacana
• African mole snake
• African paradise flycatcher
• African pied kingfisher
• African porcupine
• African rock python
• African wild cat
• African wild dog
• Agama
• Agouta (rodent resembling a mouse)
• Agouti (rodent resembling a squirrel)
• Airedale
• Aisan pied starling
• Akita Inu
• Alabama map turtle
• Alaska jingle
• Alaskan husky
• Alaskan malamute
• Albacore tuna
• Albatross
• Albertosaurus
• Albino
• Aldabra tortoise
• Allens big-eared bat
• Alligator
• Alligator gar
• Alligator snapping turtle
• Allosaurus
• Alpaca
• Alpine black swallowtail butterfly
• Alpine goat
• Alpine road guide tiger beetle
• Altiplano chinchilla mouse
• Amazon dolphin
• Amazon parrot
• Amazon tree boa
• Amber pen shell
• American alligator
• American avocet
• American badger
• American bittern
• American black vulture
• American cicada
• American crayfish
• American crocodile
• American crow
• American goldfinch
• American kestrel
• American lobster
• American marten
• American ratsnake
• American red squirrel
• American river otter
• American robin
• American toad
• American wigeon
• Amethyst gem clam
• Amethyst sunbird
• Amethystine python
• Ammonite
• Amoeba
• Amphibian
• Amphiuma
• Amur minnow
• Amur ratsnake
• Amur starfish
• Anaconda
• Anchovy
• Andean cat
• Andean cock-of-the-rock
• Andean condor
• Anemone
• Anemone crab
• Anemone shrimp
• Angel wing mussel
• Angelfish
• Anglerfish
• Angora
• Angwantibo
• Anhinga
• Animated
• Ankole
• Ankole-watusi
• Annas hummingbird
• Annelida
• Annelid
• Anole
• Anopheles
• Antarctic fur seal
• Antarctic giant petrel
• Anteater
• Antelope
• Antelope ground squirrel
• Antipodes green parakeet
• Ant
• Ant bear
• Ant lion
• Anura
• Aoudad
• Apatosaur
• Ape
• Aphid
• Apis dorsata laboriosa
• Aplomado falcon
• Aquatic leech
• Arabian horse
• Arabian oryx
• Arabian wild cat
• Aracari
• Arachnid
• Arawana
• Archaeocete
• Archaeopteryx
• Archer fish
• Arctic fox
• Arctic hare
• Arctic wolf
• Argali
• Argentine horned frog
• Argentine ruddy duck
• Argus fish
• Ariel toucan
• Arizona alligator lizard
• Ark shell
• Armadillo
• Armed crab
• Armed nylon shrimp
• Army ant
• Arrow crab
• Arrow worm
• Arrowana
• Arthropods
• Aruanas
• Asian constable butterfly
• Asian damselfly
• Asian elephant
• Asian lion
• Asian porcupine
• Asian small-clawed otter
• Asian trumpetfish
• Asian water buffalo
• Asiatic greater freshwater clam
• Asiatic lesser freshwater clam
• Asiatic mouflon
• Asiatic wild ass
• Asp
• Ass
• Assassin bug
• Astarte
• Astrangia coral
• Atlantic black goby
• Atlantic blue tang
• Atlantic ridley turtle
• Atlantic sharpnose puffer
• Atlantic spadefish
• Atlas moth
• Attwater's prairie chicken
• Auk
• Auklet
• Aurochs
• Australian curlew
• Australian freshwater crocodile
• Australian fur seal
• Australian kestrel
• Australian shelduck
• Australian Silky Terrier
• Avocet
• Axis deer
• Axolotl
• Aye-aye
• Aztec ant
• Azure-winged magpie
• Azure vase

B:

• Babirusa
• Baboon
• Bactrian
• Badger
• Bagworm
• Baiji
• Bald eagle
• Baleen whale
• Balloonfish
• Bandicoot
• Banteng
• Barasinga
• Barasingha
• Barb
• Barbet
• Barnacle
• Barracuda
• Basilisk
• Bass
• Basset hound
• Bat
• Beagle
• Bear
• Bearded dragon
• Beaver
• Bee
• Beetle
• Bell frog
• Beluga whale
• Bettong
• Big-horned sheep
• Bighorn
• Bilby
• Binturong
• Bird
• Bird of Paradise
• Bison
• Bittern
• Black Bear
• Black fly
• Black panther
• Black rhino
• Black widow spider
• Blackbird
• Blackbuck
• Blesbok
• Blowfish
• Blue jay
• Blue whale
• Bluebird
• Bluebottle
• Bluefish
• Boa
• Boa constrictor
• Boar
• Bobcat
• Bobolink
• Bobwhite
• Bongo
• Booby
• Boto
• Boubou
  
• Boutu
• Bovine
• Brahman bull
• Brahman cow
• Brant
• Bream
  
• Brocket deer
• Bronco
• Brontosaurus
• Brown Bear
• Bubblefish
• Buck
• Budgie
• Bufeo
• Buffalo
• Bufflehead
• Bug
• Bull mastiff
• Bullfrog
• Bumblebee
• Bunny
• Bunting
• Burro
• Bush Baby
• Bush squeaker
• Bustard
• Butterfly
• Buzzard

C:

• Caecilian
• Caiman
• Caiman lizard
• Calf
• Camel
• Canary
• Canine
• Canvasback
• Cape ghost frog
• Capybara
• Caracal
• Cardinal
• Caribou
• Carp
• Cassowary
• Cat
• Catbird
• Caterpillar
• Catfish
• Cattle
• Caudata
• Cavy
• Centipede
• Chafer
• Chameleon
• Chamois
• Cheetah
• Chevrotain
• Chick
• Chickadee
• Chicken
• Chihuahua
• Chimney swift
• Chimpanzee
• Chinchilla
• Chinese crocodile lizard
• Chipmunk
• Chital
• Chrysomelid
• Chuckwalla
• Chupacabra
• Cicada
• Cirriped
• Civet
• Clam
• Cleaner wrasse
• Clown anemone fish
• Clumber
• Coati
• Cob
• Cobra
• Cockatiel
• Cockatoo
• Cocker spaniel
• Cockroach
• Cod
• Coelacanth
• Collard lizard
• Colt
• Comet
• Conch
• Condor
• Coney
• Conure
• Coot
• Cooter
• Copepod
• Copperhead
• Coqui
• Coral
• Cormorant
• Corn snake
• Corydoras Catfish
• Cottonmouth
• Cottontail
• Cougar
• Cow
• Cowbird
• Cowrie
• Coyote
• Coypu
• Crab
• Crane
• Crayfish
• Cricket
• Crocodile
• Crocodile skink
• Crossbill
• Crow
• Crown-of-thorns starfish
• Crustacean
• Cub
• Cuckoo
• Curassow
• Curlew
• Cuscus
• Cusimanse
• Cuttlefish
  

D:

• Dachshund
• Daddy longlegs
• Dairy cow
• Dalmatian
• Damselfly
• Dandie Dinmont Terrier
• Dart frog
• Dassie
• Dassies
• Dassie rat
• Deer
• Deer mouse
• Degu
• Degus
• Desert pupfish
• Deinonychus
• Devil fish
• Devil Tasmanian
• Diaea Dorsata
• Diamondback rattlesnake
• Dik-Dik, Dikkops bird
• Dingo
• Dinosaur
• Diplodocus
• Dipper
• Discus
• Doberman pinscher
• Doctorfish
• Dodo bird
• Doe
• Dog
• Dogue de Bordeaux
• Dogwood Clubgall
• Dogwood Twig Borer
• Dolphin
• Donkey
• Dorado
  
• Dore
• Dorking
• Dormouse
• Dotterel
• Douglas fir bark beetle
• Dove
• Dowitcher
• Draft horse
• Dragon
• Dragonfly
• Drake
• Dromedary
• Drongo
• Duck
• Duckbill platypus
• Duckling
• Dugong
• Duiker
• Dung beetle
• Dungeness crab
• Dunlin
• Dunnart
• Dwarf mongoose

E:

• Eagle
• Earthworm
• Echidna
• Eel
• Eeve
• Eft
• Egret
• Eider
• Eidolon helvum
• Ekaltadeta
• Eland
• Electric Eel
• Elephant
• Elk
• Elver
• Emu
• Ermine
• Erne
• Esok
• Ewe
• Eyas
• Eyra
• elephant

F:

• Fairy Bluebird
• Fairy Flies
• Fairy Fly
• Falcon
• Fallow deer
• Fan worms
• Fantail
• Fat-tailed dunnart
• Fawn
• Felid
• Felidae
• Feline
• Fennec Fox
• Ferret
• Fiddler crab
• Field mouse
• Fin whale
• Finch
• Fire bellied toad
• Firefly
• Fish
• Flamingo
• Flatfish
• Flea
• Flicker
• Flickertail squirrel
• Flies
• Flounder
• Fluke
• Fly
• Flycatcher
• Flying Fox
• Flying lemur
• Flying squirrel
• Foal
• Fossa
• Fowl
• Fox
• Frigate bird
• Frilled lizard
• Frog
• Frogmouth
• Fruit bat
• Fugu
• Fulmar
• Funnel weaver spider
• Fur seal

G:

• Gadwall
• Galago
• Galah
• Galapagos albatross
• Galapagos dove
• Galapagos hawk
• Galapagos mockingbird
• Galapagos penguin
• Galapagos sea lion
• Galapagos tortoise
• Gallinule
• Gander
• Gannet
• Gar
• Gaur
• Gavial
• Gazelle
• Gecko
• Geese
• Gelada
• Gemsbok
• Gemsbuck
• Gerbil
• Gerenuk
• German shepherd
• Gharial
• Gibbon
• Gila monster
• Giraffe
• Glassfrog
• Globefish
• Gnatcatcher
• Gnat
• Gnu
• Goa
• Goat
• Godwit
• Goitered
• Goldeneye
• Golden Retriever
• Goldfinch
• Goldfish
• Goose
• Goosefish
  
• Gopher
• Gorilla
• Goshawk
• Gosling
• Grackle
• Grass spider
• Grasshopper
• Grayling
• Gray fox
• Gray wolf
• Great argus
• Grebe
• Greyhound dog
• Grison
• Grizzly bear
• Grosbeak
• Groundhog
• Grouse
• Grunion
• Guanaco
• Guib
• Guillemot
• Guinea fowl
• Guinea pig
• Gull
• Guppy
• Gyrfalcon
  

H:

• Hackee
• Haddock
• Hadrosaurus
• Hag-fish
• Hairstreak
• Hake
• Halcyon
• Halibut
• Halicore
• Hamadryad
• Hamadryas
• Hammerhead bird
• Hammerhead shark
• Hammerkop
• Hamster
• Hanuman-monkey
• Hapuka
• Hapuku
• Harbor-porpoise
• Harbor-seal
• Hare
• Harp-seal
• Harpy-eagle
• Harrier
• Harrier Hawk
• Hart
• Hartebeest
• Harvest mouse
• Harvestmen
• Hatchet-fish
• Hawaiian-monk seal
• Hawk
• Hector's dolphin
• Hedgehog
• Heifer
• Hellbender
• Hen
• Herald
• Hercules-beetle
• Hermit crab
• Heron
• Herring
• Heterodontosaurus
• Hind
• Hippo
• Hippopotamus
• Hoatzin
• Hochstetter's frog
• Hog
• Hogget
• Hoiho
• Hoki
• Homalocephale
• Honey-badger
• Honeybee
• Honey-creeper
• Honeyeater
• Hoopoe
• Horn-shark
• Horned-toad
• Horned-viper
• Hornbill
• Hornet
• Horse
• Horsefly
• Horseshoe bat
• Horseshoe crab
• Hound
• House-mouse
• Housefly
• Howler-monkey
• Huemul (deer)
• Huia
• Human
• Hummingbird
• Humpback whale
• Husky
• Hydatid-tapeworm
• Hydra
• Hyena
• Hylaeosaurus
• Hypacrosaurus
• Hypsilophodon
• Hyracotherium
• Hyrax

I:

• Ibex
• Ibis
• Ichthyosaurs
• Iguana
• Iguanodon
• Impala
• Imperator angel
• Imperial eagle
• Indian elephant
• Insects
• Intermediate egret
• Iriomote cat
• Irukandji jellyfish
• Isopod
• Ivory-billed woodpecke

J:

• Jabiru
  
• Jackal
• Jackrabbit
• Jaeger
• Jaguar
• Jaguarundi
• Janenschia
• Jay
• Jellyfish
• Jenny
• Jerboa
• Joey
• John dory
• Junco
• June bug

K:

• Kagu (bird)
• Kakapo (flightless greybilled owl-like parrot)
• Kakarikis
• Kangaroo
• Karakul
• Katydid
• Kawala
• Kentrosaurus
• Kestrel
• Kid
• Killdeer
• Killer Whale
• Killifish
• Kingbird
• Kingfisher
• Kinglet
• Kingsnake
• Kinkajou
• Kiskadee
• Kit Fox
• Kite
• Kitten
• Kittiwake
• Kitty
• Kiwi (bird)
• Koala
• Koala bear
• Kob (African antelope)
  
• Kodiak bear
• Koi
• Komodo dragon
• Koodoo
• Kookaburra
• Kouprey
• Krill
• Kronosaurus
• Kudu
• Kusimanse

L:

• Labrador Retriever
• Ladybird
• Ladybug
• Lamb
• Lamprey
• Langur
• Lark
• Laughingthrush
• Leafbird
• Leafhopper
• Leafwing
• Leech
• Lemming
• Lemur
• Leonberger
• Leopard
• Leopard Seal
• Leveret
• Lhasa Apso
• Lice
• Liger
• Lightningbug
• Limpet
• Limpkin
• Ling
• Lion
• Lionfish
• Lizard
• Llama
• Lobo
• Lobster
• Locust
• Logger head turtle
• Longhorn
• Longspur
• Loon
• Lorikeet
• Loris
• Louse
• Lovebird
• Lowchen
• Lungfish
• Lynx
  

M:

• Macaque
• Macaw
• Macropod
• Madagascar hissing roach
• Magpie
• Maiasaura
• Majungatholus
• Malamute
• Mallard
• Maltese dog
• Mamba
• Mamenchisaurus
• Mammal
• Mammoth
• Manatee
• Mandrill
• Mangabey
• Manta
• Manta ray
• Mantis
• Mantis ray
• Manx cat
• Mara
• Marabou
• Marbled Murrelet
• Mare
• Marlin
• Marmoset
• Marmot
• Marten
• Martin
• Massasauga
• Massospondylus
• Mastiff
• Mastodon
• Meadowlark
• Meerkat
• Megalosaurus
• Megalotomus quinquespinosus
• Megaraptor
• Merganser
• Merlin
• Mice
• Microvenator
• Midge
• Milksnake
• Millipede
• Minibeast
• Mink
• Minnow
• Mite
• Moa
• Mockingbird
• Mole
• Mollies
• Mollusk
• Molly
• Monarch
• Mongoose
• Monkey
• Monkfish
  
• Monoclonius
• Montanoceratops
• Moorhen
• Moray
• Moray eel
• Moose
• Mosasaur
• Mosquito
• Moth
• Motmot
• Mouflon
• Mountain cat
• Mountain lion
• Mouse
• Mousebird
• Mouse/Mice
• Mud puppy
• Mule
• Mullet
• Muntjac
• Murrelet
• Musk ox
• Muskrat
• Mussaurus
• Mussel
• Mustang
• Myna
• Mynah
• Myotis
  

N:

• Nabarlek
• Nag
• Naga
• Nagapies
• Naked mole rat
• Nandine
• Nandoo
• Nandu
• Narwhal
• Narwhale
• Natterjack Toad
• Nauplius
• Nautilus
• Needle fish
• Needletail
• Nematode
• Nene
• Neon blue guppy
• Neon blue hermit crab
• Neon dwarf gourami
• Neon rainbow fish
• Neon red guppy
• Neon Tetra
• Nerka
• Nettlefish
• Newfoundland dog
• Newt
• Newt Nutria
• Night crawler
• Night heron
• Nighthawk
• Nightingale
• Nightjar
• Nijssenis's dwarf chihlid
• Nilgai
• Nine banded armadillo
• Noctilio
• Noctule
• Noddy
• Noolbenger
• Northern cardinals
• Northern elephant seal
• Northern flying squirrel
• Northern fur seal
• Northern hairy-nosed wombat
• Northern pike
• Northern sea horse
• Northern spotted owl
• Norway lobster
• Norway rat
• Nubian goat
• Nudibranch
• Numbat
• Nurse shark
• Nutcracker
• Nuthatch
• Nutria
• Nyala
• Nymph

O:

• Ocelot
• Octopus
• Okapi
• olingo
• Olm
• Opossum
• Orangutan
• Orca
• Oriole
• Oropendola
• Oropendula
• Oryx
• Osprey
• Ostracod
• Ostrich
• Otter
• Ovenbird
• Owl
• Ox
• Oxen
• Oxpecker
• Oyster
• Ozark big-eared bat

P:

• Paca
  
• Pacific Parrotlet
• Paddlefish
• Panda
• Pangolin
• Panther
• Papillon
• Parakeet
• Parrot
• Partridge
• Peacock
• Peafowl
• Peccary
• Pekingese
• Pelican
• Pelicinus Petrel
• Penguin
• Perch
• Peregrine falcon
• Pewee
• Phalarope
• Pharaoh hound
• Pheasant
• Phoebe
• Phoenix
• Pig
• Pigeon
• Piglet
• Pika
• Pike
• PikePerch
  
• Pilchard
• Pine marten
• Pink river dolphin
• Pinniped
• Pintail
• Pipistrelle
• Pipit
• Piranha
• Pit bull
• Pitta bird
• Plain squeaker
• Plankton
• Platypus
• Plover
• Polar bear
• Polecat
• Polliwog
• Polyp
• Polyturator
• Pomeranian
• Pony
• Poodle
• Porcupine
• Porpoise
• Portuguese man of war
• Possum
• Prairie dog
• Prawn
• Praying Mantis
• Primate
• Pronghorn
• Pseudodynerus quadrisectus
• Ptarmigan
• Pterodactyls
• Pterosaurs
• Puffer
• Puffer fish
• Puffin
• Pug
• Pullet
• Puma
• Pup fish
• Puppy
• Purple marten
• Pygmy
• Python

Q:

• Quadrisectus
• Quagga
• Quahog
• Quail
• Queen Alexandra's birdwing
• Queen ant
• Queen bee
• Queen conch
• Queen snake
• Queensland grouper
• Queensland heeler
• Quelea
• Quetzal
• Quetzalcoatlus
• Quillback
• Quinquespinosus
• Quokka
• Quoll

• Rabbit
• Rabid squirrel
• Raccoon
• Racer
• Racerunner
• Ragfish
• Rail
• Rainbow fish
• Rainbow lorikeet
• Rainbow trout
• Ram
• Raptors
• Rasbora
• Rat
• Rat fish
• Rattail
• Rattlesnake
• Raven
• Ray
• Red-tailed hawk
• Redhead
• Redheaded woodpecker
• Redpoll
• Redstart
• Reindeer
• Reptile
• Reynard
• Rhea
• Rhesus monkey
• Rhino
• Rhinoceros
• Rhinoceros beetle
• Rhodesian Ridgeback
• Ring tailed lemur
• Ringworm
• Rio Grande escuerzo
• Roach
• Roadrunner
• Roan
• Robin
• Rock rat
• Rodent
• Roebuck
• Roller
• Rook
• Rooster
• Rottweiler

S:

• Sable
• Sable Antelope
• Sablefish
  
• Saiga
• Saki monkey
• Salamander
• Salmon
• Salt water crocodile
• Sambar
• Samoyed dog
• Sand dollar
• Sandbar shark
• Sanderling
• Sandpiper
• Sapsucker
• Sardine
• Sawfish
• Scallop
• Scarab
• Scarlet ibis
• Scaup
• Schapendoes
• Schipperke
• Schnauzer
• Scorpion
• Scoter
• Screamer
• Sea hog
• Seahorse
• Sea lion
• Sea monkey
• Sea Slug
• Sea urchin
• Seabird
• Seagull
• Seal
• Senegal python
• Seriema
• Serpent
• Serval
• Shark
• Shearwater
• Sheep
• Sheldrake
• Shelduck
• Shiba inu
• Shih Tzu
• Shorebird
• Shoveler
• Shrew
• Shrike
• Shrimp
• Siamang
• Siamese cat
• Siberian tiger
• Sidewinder
• Sifaka
• Silkworm
• Silver fox
• Silverfish
• Silverside fish
• Siskin
• Skimmer
• Skink
• Skipper
• Skua
• Skunk
• Skylark
• Sloth
• Sloth bear
• Slug
• Smelts
• Smew
• Snail
• Snake
• Snipe
• Snow dog
• Snow geese
• Snow leopard
• Snow monkey
• Snowy owl
• Sockeye Salmon
• Solenodon
• Solitaire
• Songbird
• Sora
• Southern hair nosed wombat
• Sow
• Spadefoot
• Sparrow
• Sphinx
• Spider
• Spider monkey
• Spiketail
• Sponge
• Spoonbill
• Spotted dolphin
• Spreadwing
• Spring peeper
• Springbok
• Squab
• Squamata
• Squeaker
• Squid
• Squirrel
• Stag
• Stag beetle
• Stallion
• Starfish
• Starling
• Steed
• Steer
• Stegosaurus
• Stick insect
• Stickleback
• Stilt
• Stingray
• Stinkbug
• Stinkpot
• Stoat
• Stork
• Stud
• Sturgeon
• Sugar glider
• Sun bear
• Sun bittern
• Sunfish
• Swallow
• Swallowtail
• Swan
• Swellfish
• Swift
• Swordfish

T:

• T-Rex
• Tadpole
• Tahr
• Takin
• Tamarin
• Tanager
• Tapaculo
• Tapeworm
• Tapir
• Tarantula
• Tarpan
• Tarsier
• Taruca
• Tasmanian devil
• Tasmanian Tiger
• Tattler
• Tayra
• Teal
• Tegus
• Teledu (SE Asian mammal)
• Tench
• Tenrec
• Termite
• Tern
• Terrapin
• Terrier
• Thrasher
• Thrush
• Thunderbird
• Thylacine
• Tick
• Tiger
• Tiger shark
• Tilefish
• Tinamou
• Titi
• Titmouse
• Toad
• Toadfish
• Tomtit
  
• Topi
• Tortoise
• Toucan
• Towhee
• Tragopan
• Treecreeper
• Triceratops
• Trogon
• Trout
• Trumpeter bird
• Trumpeter swan
• Tsetse fly
• Tuatara
• Tuna
• Turaco
• Turkey
• Turnstone
• Turtle
• Turtle Dove

U:

• Uakari
• Uganda kob
• Uinta ground squirrel
• Umbrella bird
• Umbrette
• Unau
• Ungulate
• Unicorn
• Upupa
• Urchin
• Urial
• Uromastyx maliensis
• Uromastyx spinipes
• Urson
• Urubu
• Urus
• Urutu
• Urva
• Utah prairie dog

V:

• Vampire bat
• Vaquita
• Veery
• Velociraptor
• Velvet crab
• Velvet worm
• Venomous snake
• Verdin
• Vervet
• Vicuna
• Viper
• Viper squid
• Viperfish
• Vireo
• Virginia opossum
• Vixen
• Vole
• Volvox
• Vulpes Velox
• Vulpes Vulpes
• Vulture

:">W:

• Wallaby
• Wallaroo
• Walleye
• Walrus
• Warbler
• Warthog
• Wasp
• Water buffalo
• Water dragons
• Water moccasin
• Waterbuck
• Waterdogs
• Waterthrush
• Wattlebird
• Watussi
• Waxwing
• Weasel
• Weaver bird
• Weevil
• Whale
• Whapuku
• Whelp
• Whimbrel
• Whippet
• Whippoorwill
• White beaked dolphin
• White-eye
• White pelican
• White rhino
• White tailed deer
• White tipped reef shark
• Whooper
• Whooping crane
• Widgeon
• Widow spider
• Wildcat
• Wildebeest
• Willet
• Wireworm
• Wisent
• Wobbegong shark
• Wolf
• Wolf spider
• Wolverine
• Wombat
• Wood storks
• Woodchuck
• Woodcock
• Woodpecker
• Worm
• Wrasse
• Wreckfish
• Wren
• Wrench bird
• Wryneck
• Wuerhosaurus
• Wyvern

• X-Ray fish
• X-Ray tetra
• Xanclomys
• Xanthareel
• Xantus
• Xantus murrelet
• Xeme
• Xenarthra
• Xenoposeidon
• Xenops
• Xenopterygii
• Xenopus
• Xenotarsosaurus
• Xenurine
• Xenurus unicinctus
• Xerus
• Xiaosaurus
• Xinjiangovenator
• Xiphias
• Xiphias gladius
• Xiphosuran
• Xoloitzcuintli
• Xoni
• Xuanhanosaurus
• Xuanhuaceratops
• Xuanhuasaurus

Y:

• Yaffle
• Yak
• Yapok
• Yard ant
• Yearling
• Yellow bellied marmot
• Yellow belly lizard
• Yellowhammer
• Yellowjacket
• Yellowlegs
• Yellowthroat
• Yeti
• Ynambu
• Yorkshire terrier
• Yosemite toad
• Yucker

Z:

• Zander
• Zanzibar day gecko
• Zebra
• Zebra dove
• Zebra finch
• Zebra-tailed lizard
• Zebrafish
• Zebu
• Zenaida
• Zeren
• Zethus spinipes
• Zethus wasp
• ZigZag salamander
• Zone-tailed pigeon
• Zooplankton
• Zopilote
• Zorilla