The oarfish is one of the longest bony fish in the world.

Octopuses have three hearts and blue blood.

Fact #1 · Animals

Certain beetles can produce sounds by rubbing body parts together.

Fact #546 · Animals

A mantis shrimp can strike with the speed of a bullet.

Fact #342 · Animals

An albatross can glide for hours without flapping its wings.

Fact #539 · Animals

A polar bear's fur is actually transparent.

Fact #391 · Animals

Elephants have one of the longest gestation periods of any land animal.

Fact #386 · Animals

Some species of penguins can swim at speeds of up to 15 miles per hour.

Fact #251 · Animals

A peacock spreads its tail feathers during courtship displays.

Fact #466 · Animals