Flamingos are not born pink — they turn pink from carotenoid pigments in the algae and brine shrimp they eat.

Certain insects communicate using vibrations.

Fact #430 · Animals

Certain frogs can inflate themselves to appear larger to predators.

Fact #377 · Animals

Sea otters use rocks as tools to break open shellfish.

Fact #43 · Animals

Some insects undergo complete metamorphosis.

Fact #289 · Animals

Octopuses have three hearts and blue blood.

Fact #1 · Animals

A polar bear's fur is actually transparent.

Fact #391 · Animals

An albatross can glide for hours without flapping its wings.

Fact #539 · Animals

Polar bears have black skin beneath their white fur.

Fact #26 · Animals