The heart of a blue whale is so large that a small child could swim through its arteries.

Male seahorses carry and give birth to their young.

Fact #359 · Animals

Some birds use tools to extract insects from wood.

Fact #416 · Animals

Some insects have lifespans of only a few hours as adults.

Fact #411 · Animals

A porcupine raises quills as a defense mechanism.

Fact #524 · Animals

Penguins can drink salt water because of specialized glands.

Fact #362 · Animals

A king cobra can raise a third of its body off the ground.

Fact #421 · Animals

A toucan’s beak is lightweight despite its size.

Fact #526 · Animals

Some birds can imitate sounds from their environment.

Fact #489 · Animals