The hagfish can tie itself in a knot and slide the knot along its body — used to escape predators.

Certain fish live in symbiotic relationships with other species.

Fact #535 · Animals

Certain fish can survive in oxygen-poor water.

Fact #453 · Animals

Certain ants build floating rafts during floods.

Fact #387 · Animals

Certain fish can produce their own light through bioluminescence.

Fact #372 · Animals

Some birds use tools to extract insects from wood.

Fact #416 · Animals

A parrot can mimic human speech sounds.

Fact #429 · Animals

The first dinosaurs appeared during the Triassic period.

Fact #632 · Animals

A peacock spreads its tail feathers during courtship displays.

Fact #466 · Animals