The human body has four types of teeth: incisors, canines, premolars, and molars, each with different functions.

Hippopotamuses secrete a reddish fluid that helps protect their skin.

Fact #1246 · Human Body

Your brain uses patterns to recognize faces almost instantly.

Fact #1752 · Human Body

Polar bears have black skin beneath their white fur.

Fact #26 · Human Body

The longest winning streak in professional sports can span years.

Fact #940 · Human Body

A dog’s nose print is unique, similar to a human fingerprint.

Fact #1347 · Human Body

A horned lizard can squirt blood from its eyes as a defense.

Fact #538 · Human Body

A sea anemone uses stinging cells to capture prey.

Fact #437 · Human Body

The Arctic hare has short ears to minimize heat loss.

Fact #885 · Human Body