The peacock mantis shrimp has the most complex eyes in the animal kingdom, with 16 photoreceptor types.

A crocodile can replace its teeth multiple times in its life.

Fact #406 · Animals

Some birds build elaborate nests.

Fact #308 · Animals

Some ants can carry many times their own body weight.

Fact #132 · Animals

Bats are the only mammals capable of sustained flight.

Fact #58 · Animals

A hummingbird's heart can beat over 1,000 times per minute.

Fact #345 · Animals

Some snakes can sense heat using specialized pits.

Fact #408 · Animals

Certain birds store food in hidden caches.

Fact #426 · Animals

Some fish use tools to crack open shellfish.

Fact #405 · Animals