A koala sleeps for many hours each day.

A toucan’s beak is lightweight despite its size.

Fact #526 · Animals

Some species of penguins can swim at speeds of up to 15 miles per hour.

Fact #251 · Animals

A group of porcupines is called a prickle.

Fact #358 · Animals

Certain fish change sex during their lifetime.

Fact #503 · Animals

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

Some frogs carry their tadpoles on their backs.

Fact #354 · Animals

Some insects undergo complete metamorphosis from larva to adult.

Fact #440 · Animals

Some sharks can reproduce without a mate in rare cases.

Fact #544 · Animals