Many species of beetles have hardened wing covers called elytra.

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

Fact #553 · Animals

A great horned owl has powerful talons for hunting.

Fact #449 · Animals

Some species of jellyfish are biologically immortal under certain conditions.

Fact #159 · Animals

Certain birds use thermal air currents to glide efficiently.

Fact #499 · Animals

Some species of bamboo can grow nearly three feet in one day.

Fact #171 · Animals

Some birds cache food for later consumption.

Fact #461 · Animals

Some mammals hibernate during winter.

Fact #303 · Animals

Some birds can use tools to access hidden food.

Fact #576 · Animals