Cats slow blink to show trust and affection.

Some fish build intricate sand nests.

Fact #436 · Animals

Certain owls hunt silently because of specialized feather structures.

Fact #542 · Animals

Crows can recognize individual human faces.

Fact #15 · Animals

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

Fact #406 · Animals

A fox has keen hearing adapted for hunting small prey.

Fact #534 · Animals

A blue whale's tongue can weigh as much as an elephant.

Fact #443 · Animals

A bald eagle builds some of the largest nests of any bird.

Fact #553 · Animals

Some birds migrate thousands of miles each year.

Fact #77 · Animals