dog---puppy(pup)
hen, cock, many birds-chick (chicken)
frog-tadpole
pig-piglet
cat-kitten
snake -snakelet
spider - spiderling
owl - owlet
duck - duckling
Sheep - lamb
dolphin, seal, shark, walrus, hamster -pup
lion, panda, raccoon, leopard, fox, bear - cub
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