Alligator, bee, cat, dog, elephant, Friesian horse, gnat, hyena, iguana, jaguar, kangaroo, lemur, monkey, nematode, opossum, pig, quail, rail, seagull, tiger, urchin, velociraptor, wallaby, x?!, yak, zebra

No. Why did you anon me?

angiofago
blatta
chocobo
daino
elementale dell'aria
foca
gnoll
hebrews
ichthyostega
leone
marmotta
narvalo
orco
pterodattilo
quantum deathclaw
rinoceronte
serpente
tremor
unikhorne
vettel
zecca

antelope, Beaver,canary Dove, Elephant, Ferret Goose, Hawk, Iguana, Jack Rabbit, Killer Whale, Lama, Moose, Numbat., Octopussy :P Pheasant, Quoll. Racoon, Saltasaurus, Tenontosaurus, Oh i give up ,do i win?:)

Anteater, Brachiosaurus, Crow, Dog, Earwig, Finch, Giraffe, Horse, Ichthyosaur, Jerboa, Kingfisher, Lark, Mastodon, Nightjar, Ox, Parrot, Quail, Rabbit, Seal, Tapir, Utahraptor, Velociraptor, Woodpecker, X... uh... X-ray (a dead ray). I nearly got stuck at U and was going to say Updog.

(without looking at any others' answers) Aardvark Bat Cat Dog Elephant Fox Gerbil Hagfish Iguana Jaguar Kangaroo Llama Mongoose Nessie ;) Octopus Platypus Quail Rat Snake Tiger Urchin Varmit Wombat I give up.

Antelope
Bee
Cougar
Dove
Elephant
Falcon
Gorilla
Horse
Impala
Jackle
Kangaroo
Lama
Mollusk
Narwhale
Orangutan
Penguin
Quail
Rat
Seagull
Turtle
Unicorn (yes they're real, no I won't prove it)
Viper
Walrus
X-Ray Tetra
Zebra

Albatross, beetle, cat, dog, echidna, flamingo, guinea pig, horse, iguana, jackal, kangaroo, lemming, mongoose, nightingale, opossum, penguin, quail, reindeer, squirrel, tortoise, unicorn, vole, wallaby, I’m done.

OK Herewego

Aardvark Buffalo Caiman Donkey Elephant Ferret Giraffe Hippopotamus Iguana Jackal Kangaroo Lemur Macaw Nutria Orangutan Platypus Quail Rabbit Sloth Turkey Uh, I think I'm out and after I post this I will think of some super obvious U animal that will make me feel dumb - dumber than usual