Select the mammal.
penguin keel-billed toucan American bullfrog koala
Mammals have hair or fur and feed their young milk.
A koala is a mammal. It has fur and feeds its young milk.
Koalas sleep for up to 20 hours a day!
A penguin is a bird. It has feathers, two wings, and a beak.
Penguins live near water. Penguins cannot fly! They use their wings to swim.
A keel-billed toucan is a bird. It has feathers, two wings, and a beak.
Toucans have large beaks. A toucan's beak can be half as long as its body.
An American bullfrog is an amphibian. It has moist skin and begins its life in water.
Frogs live near water or in damp places. Most frogs lay their eggs in water.