Who else but Sandra Boynton could imagine fifteen Bobs in one book? Actually, that's fourteen Bobs, and one Simon James Alexander Ragsdale the Third (he's a turtle), which gives Fifteen Animals! the added dimension of being a unique counting book--count the Bobs, count the pets, count the bunnies, count the fish. And, for the first time, a person character, an earnest little boy who loves animals and happily sings:

I really like animals,
I like them a lot.
Fifteen animals is what I've got.
I've got fifteen animals.
They're friendly and tame, and
I've given each one a special name.
Make that Bob.