Elephants recognize themselves in mirrors — as do dolphins, orcas, magpies, and great apes.

A giraffe's neck contains the same number of vertebrae as a human's.

Fact #398 · Animals

Some birds use tools to extract insects from wood.

Fact #416 · Animals

Bats are the only mammals capable of sustained flight.

Fact #58 · Animals

A hummingbird can hover in place while feeding.

Fact #484 · Animals

A crocodile can replace its teeth multiple times in its life.

Fact #406 · Animals

Polar bears have black skin beneath their white fur.

Fact #26 · Animals

A hippopotamus can hold its breath underwater for several minutes.

Fact #433 · Animals

A moose has long legs adapted for walking in snow.

Fact #518 · Animals