Piranhas are actually relatively harmless to humans — attacks are rare and usually defensive.

Bats are the only mammals capable of sustained flight.

Fact #58 · Animals

Polar bears have black skin beneath their white fur.

Fact #26 · Animals

A falcon can dive at extraordinary speeds.

Fact #520 · Animals

A rhinoceros has thick skin for protection.

Fact #504 · Animals

Some insects can lift many times their body weight.

Fact #213 · Animals

Some amphibians can absorb oxygen through their skin.

Fact #328 · Animals

A koala sleeps for many hours each day.

Fact #490 · Animals

Some species of octopus can change both color and texture.

Fact #343 · Animals