Crows can remember individuals who previously threatened them.

Some birds can sleep while flying.

Fact #332 · Animals

Some ants can carry many times their own body weight.

Fact #132 · Animals

Certain frogs can glide from tree to tree.

Fact #394 · Animals

Some butterflies migrate across continents.

Fact #424 · Animals

Some spiders use vibrations to detect trapped prey.

Fact #455 · Animals

Some birds migrate between hemispheres each year.

Fact #203 · Animals

A blue whale's heart can weigh over 400 pounds.

Fact #104 · Animals

Certain ants can detect chemical trails left by their colony.

Fact #448 · Animals