Frogs croak and they have tadpoles
Cocks, well, roosters! (cock-a-doodle-doo!), crow and hens cluck. They have chickens.
Birds (like sparrows) chirp (tweet, tweet!) and some, like canaries, sing!
Owls hoot and they have owlets
Ducks and drakes quack
Dogs bark (woof, woof!, bow wow!), and if they want to sound threatening, they growl
Puppies (and also adult dogs when you step on them) yelp
Cats meow (meow, meow!), or purr if happy! Little cats are kittens, or kitties!
Horses and mares neigh. They have foals (male) or fillies (female), or colts.
Rabbits have bunnies.
Pigs runt, squeal and squeak. They have piglets
Wolves howl and they have cubs.
Lions and tigers / tigres roar. They have cubs.
Bears growl when they get angry! They also have cubs.
Bulls bellow and cows moo
Flies buzz (and drive you crazy!)
Giraffes, goats, sheep bleat, and sheep also baa! Little sheep are lambs.
Monkeys chatter! (and gibber)