The human immune system can distinguish between over a billion different antigens.

Certain frogs can inflate themselves to appear larger to predators.

Fact #377 · Animals

Some birds can use tools to access hidden food.

Fact #576 · Animals

Some fish build intricate sand nests.

Fact #436 · Animals

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

Bees perform a waggle dance to communicate the location of food sources.

Fact #19 · Animals

A snow leopard’s thick fur helps it survive in cold climates.

Fact #454 · Animals

A wolf's howl can travel several miles.

Fact #427 · Animals

Some species of octopus can escape through very small openings.

Fact #451 · Animals