Ant - antling
Ant Lion - doodlebug
Antelope - calf, fawn, kid or yearling
Bear - cub
Beaver - kit or kitten
Bird - nestling
Bobcat - kitten or cub
Buffalo - calf, yearling or spike-bull
Camel - calf or colt
Canary - chick
Caribou - calf or faun
Cat - kit, kitling, kitten or pussy
Cattle - calf, stot or yearling - (m. - bullcalf or f. - heifer)
Chicken - chick, chicken, poult, cockerel or pullet
Chimpanzee - infant
Cicada - nymph
Clam - littleneck
Cod - codling, scrod or sprag
Condor - chick
Cougar - kitten or cub
Coyote - fawn
Dog - whelp or puppy
Dove - pigeon or squab
Duck - duckling or flapper
Eagle - eaglet
Eel - fry or elver
Elephant - calf
Elk - calf
Fish - fry, fingerling, minnow or spawn
Fly - grub or maggot
Frog - poll
Giraffe - calf
Goat - kid
Goose - gosling
Grouse - chick, poult, squealer or cheeper
Hare - Leveret
Horse - colt, foal, stat, stag, filly, hog-colt, youngster, yearling or hogget
Kangaroo - joey
Leopard - cub
Lion - shelp, cub or lionet
Louse - nit
Mink - kit or cub
Monkey - suckling, yearling or infant
Mosquito - larva, flapper, wriggler or wiggler
Muskrat - kit
Opossum - joey
Ostrich - chick
Otte - pup, kitten, whelp or cub
Owl - owlet or howlet
Oyster - set] - seed, spat or brood
Partidge - cheeper
Pelican - chick or nestling
Penguin - fledgling or chick
Pheasant - chick or poult
Pigeon - squab, nestling or squealer
Possum - joey
Quail - cheeper, chick or squealer
Rabbit - kitten or bunny
Raccoon - kit or cub
Reindeer - fawn
Rhinoceros - calf
Salmon - salmon, parr or smolts
Sea Lion - pup
Seal - whelp, pup, cub or bachelor
Shark - cub
Sheep - lamb, lambkin, shearling or yearling
Skunk - kitten
Squirrel - dray
Swan - cygnet
Swine (Pig) - shoat, trotter or piglet
Termite - nymph
Tiger - whelp or cub
Toad - tadpole
Turkey - chick or poult
Turtle - chicken
Walrus - cub
Weasel - kit
Whale - calf
Wolf - cub or pup
Woodchuck - kit or cub
Zebra - colt or foal

If you spot any that I've missed, feel free to msg me!