The mantled howler monkey is one of the loudest land animals — its calls can be heard 5 km away.

Certain beetles can produce sounds by rubbing body parts together.

Fact #546 · Animals

A blue whale's tongue can weigh as much as an elephant.

Fact #443 · Animals

Some lizards can detach their tails to escape predators.

Fact #509 · Animals

The first dinosaurs appeared during the Triassic period.

Fact #632 · Animals

A tarantula can shed its exoskeleton as it grows.

Fact #563 · Animals

Certain birds can recognize themselves in mirrors.

Fact #404 · Animals

Certain fish change sex during their lifetime.

Fact #503 · Animals

A fox has keen hearing adapted for hunting small prey.

Fact #534 · Animals