Do Animals Have Bellybuttons?

Have you ever wondered about bellybuttons? All people have them. Do animals have them, too?


Many animals do have bellybuttons. Dogs and cats have them. Cows and elephants have them, too. Even some animals that live in water have them. Whales and dolphins have bellybuttons. All these animals and people are mammals.


Frogs, fish, lizards, and birds don't have bellybuttons. They are not mammals. Many other animals are not mammals, either. Only mammals have bellybuttons.


. . . Print Entire Reading Comprehension with Questions