The giant Pacific octopus has three hearts, nine brains (one central, one per arm), and blue blood.

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

A honeybee colony functions as a highly coordinated unit.

Fact #409 · Animals

Certain beetles can produce sounds by rubbing body parts together.

Fact #546 · Animals

Some butterflies migrate across continents.

Fact #424 · Animals

Some amphibians can absorb oxygen through their skin.

Fact #328 · Animals

Elephants have one of the longest gestation periods of any land animal.

Fact #386 · Animals

Sea otters hold hands while sleeping to avoid drifting apart.

Fact #364 · Animals

Some insects undergo complete metamorphosis.

Fact #289 · Animals