A snail can sleep for up to three years at a time.

Clownfish can change sex during their lifetime.

Fact #361 · Animals

The ozone layer is located in the stratosphere.

Fact #140 · Animals

Certain fish can produce their own light through bioluminescence.

Fact #372 · Animals

Some birds can imitate sounds from their environment.

Fact #489 · Animals

Some species of spiders can survive underwater for short periods.

Fact #414 · Animals

Some species of octopus can escape through very small openings.

Fact #451 · Animals

Some insects undergo complete metamorphosis from larva to adult.

Fact #440 · Animals

Some animals use camouflage to avoid predators.

Fact #336 · Animals