Penguins propose to their mates with pebbles — finding the perfect rock is a serious courtship ritual.

Certain reptiles regulate body temperature through basking.

Fact #527 · Animals

The platypus is one of the few mammals that lay eggs.

Fact #382 · Animals

A hummingbird's heart can beat over 1,000 times per minute.

Fact #345 · Animals

A toucan’s beak is lightweight despite its size.

Fact #526 · Animals

Some sharks can sense a drop of blood from far away.

Fact #348 · Animals

A walrus uses its tusks to haul itself onto ice.

Fact #536 · Animals

Elephants can detect distant thunderstorms through ground vibrations.

Fact #347 · Animals

Certain insects can mimic leaves to avoid predators.

Fact #463 · Animals