Certain birds can recognize themselves in mirrors.

A group of wolves is called a pack.

Fact #112 · Animals

Some birds can fly for months without landing.

Fact #164 · Animals

Certain fish can survive in oxygen-poor water.

Fact #453 · Animals

Some fish use tools to crack open shellfish.

Fact #405 · Animals

The Arctic tern migrates farther than any other bird.

Fact #450 · Animals

Certain insects use camouflage to resemble sticks or leaves.

Fact #570 · Animals

Some reptiles can survive long periods without food.

Fact #501 · Animals

Certain frogs use loud calls to attract mates.

Fact #459 · Animals