Sea otters hold hands while sleeping to prevent drifting apart.

Some amphibians can absorb oxygen through their skin.

Fact #328 · Animals

A cuttlefish can rapidly change both color and pattern.

Fact #472 · Animals

Certain birds can recognize themselves in mirrors.

Fact #404 · Animals

Blue whales can grow longer than 90 feet.

Fact #341 · Animals

Dragonflies can fly in all directions, including backward.

Fact #352 · Animals

Some mammals hibernate during winter.

Fact #303 · Animals

Certain species of fish build bubble nests.

Fact #511 · Animals

A wolf can travel dozens of miles in a single day.

Fact #545 · Animals