Domesticated dogs diverged from wolves at least 15,000 years ago — through human-directed selection.

An albatross can glide for hours without flapping its wings.

Fact #539 · Animals

A koala sleeps for many hours each day.

Fact #490 · Animals

Some birds migrate thousands of miles each year.

Fact #77 · Animals

Sea otters hold hands while sleeping to avoid drifting apart.

Fact #364 · Animals

Some birds migrate using landmarks and stars.

Fact #477 · Animals

Some insects undergo complete metamorphosis from larva to adult.

Fact #440 · Animals

A moose has long legs adapted for walking in snow.

Fact #518 · Animals

Some species of ants can form bridges using their bodies.

Fact #420 · Animals