Mammals
baby cow
calf
baby duck
duckling
baby cat
kitten
tadpole
frog
baby kangaroo
joey
baby pig
piglet
baby chicken
chick
baby dog
puppy
pup
dog, fox, wolf, mouse, rat, otter
baby lion
cub
baby goat
kid
baby goose
gosling
baby horse
foal, colt
kit
fox
baby bear
pup
baby deer
fawn
baby swan
cygnet
baby sheep
lamb
minnow
fish
baby dinosaur or crocodile
hatchling
baby whale
calf
baby emu
chick
baby snake
snakelet
eaglet
eagle
baby elephant
calf