The giant Pacific octopus has a lifespan of only 3–5 years — reproducing once and then dying.

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

A cuttlefish can camouflage almost instantly.

Fact #383 · Animals

Some species of sharks must keep moving to breathe.

Fact #284 · Animals

Certain birds of prey can spot small animals from great heights.

Fact #483 · Animals

Some birds can fly at high altitudes over mountains.

Fact #323 · Animals

Some birds can sleep while flying.

Fact #332 · Animals

Polar bears have black skin beneath their white fur.

Fact #26 · Animals

Certain birds store food in hidden caches.

Fact #426 · Animals