Dolphin, Fox, Hippo, and Ox: What Is a Mammal? (Animal Groups Are Categorical)

What is a mammal? Dogs, whales, elephants, and many other creatures are all mammals! Clever rhymes from Brian P. Cleary and comical illustrations from Martin Goneau explain the traits that all mammals have in common and help you determine which creatures belong in this hairy group. Animal names are printed in color for easy identification, and the goofy CATegorical cats make learning fun!