Some species of cicadas emerge from underground only once every 17 years.

A horned lizard can squirt blood from its eyes as a defense.

Fact #538 · Animals

A wolf pack operates with coordinated social behavior.

Fact #488 · Animals

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

Fact #342 · Animals

A peacock spreads its tail feathers during courtship displays.

Fact #466 · Animals

A blue whale consumes vast amounts of krill daily.

Fact #478 · Animals

Bats are the only mammals capable of sustained flight.

Fact #58 · Animals

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

Sea otters hold hands while sleeping to avoid drifting apart.

Fact #364 · Animals