Some insects undergo complete metamorphosis from larva to adult.

A koala sleeps for many hours each day.

Fact #490 · Animals

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

Fact #386 · Animals

A spider spins silk that is incredibly strong for its weight.

Fact #528 · Animals

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

Fact #382 · Animals

A red kangaroo is the largest marsupial.

Fact #480 · Animals

A scorpion glows under ultraviolet light.

Fact #435 · Animals

Bats are the only mammals capable of sustained flight.

Fact #58 · Animals

Certain species of frogs are active at night.

Fact #519 · Animals