The human body has enough iron to make a 3-inch nail.

Cats can rotate their ears independently.

Fact #1336 · Human Body

Your brain creates reality.

Fact #1722 · Human Body

Certain parrots can learn to mimic human speech.

Fact #1258 · Human Body

A polar bear’s fur traps heat efficiently.

Fact #571 · Human Body

Certain sea slugs can incorporate stinging cells from their prey.

Fact #566 · Human Body

The Earth's inner core is primarily iron and nickel.

Fact #150 · Human Body

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

Fact #1347 · Human Body

A sloth can take up to a month to digest a single meal.

Fact #441 · Human Body