Use The Mammals - Echidna to Whales - Quiz to test your knowledge of how mammals can range in size from just a few ounces to more than 200 tons and the two subclasses of the class Mammalia and the characteristics common to all members of it. This quiz will also test your knowledge of which mammal is the only one capable of flying as well as koalas, monkeys, orangutans, armadillos, rabbits, prairie dogs, beavers, mice, dolphins, blue whales, and much more.
