Cuttlefish have W-shaped pupils that may allow them to see in all directions simultaneously.

A giraffe's heart can weigh over 20 pounds.

Fact #447 · Animals

Some insects undergo complete metamorphosis from larva to adult.

Fact #440 · Animals

Certain insects can enter a dormant state called diapause.

Fact #399 · Animals

Bees have five eyes.

Fact #356 · Animals

Butterflies can see ultraviolet patterns on flowers.

Fact #368 · Animals

Some species of ants can form bridges using their bodies.

Fact #420 · Animals

Some birds can see ultraviolet light.

Fact #120 · Animals

Some birds can mimic human speech.

Fact #268 · Animals