The box jellyfish has 64 anuses and 24 eyes, four of which can form true images.

Some insects can survive being frozen.

Fact #560 · Animals

Certain fish form schools to reduce predation risk.

Fact #479 · Animals

Some snakes can sense heat using specialized pits.

Fact #408 · Animals

Some birds use tools to extract insects from wood.

Fact #416 · Animals

Bats are the only mammals capable of sustained flight.

Fact #58 · Animals

Some birds migrate between hemispheres each year.

Fact #203 · Animals

Certain fish change sex during their lifetime.

Fact #503 · Animals

Some species of birds form lifelong pair bonds.

Fact #537 · Animals