Elephants mourn their dead — they return to the bones of deceased family members and handle them gently.

Certain birds can recognize themselves in mirrors.

Fact #404 · Animals

Some crabs can live both on land and in water.

Fact #473 · Animals

Some reptiles can live for over a century.

Fact #319 · Animals

Certain birds build hanging nests from woven plant fibers.

Fact #471 · Animals

Some species of frogs can survive being partially dehydrated.

Fact #444 · Animals

A polar bear's fur is actually transparent.

Fact #391 · Animals

A puffin uses its colorful beak to attract mates.

Fact #510 · Animals

Some amphibians can absorb oxygen through their skin.

Fact #328 · Animals