A group of hedgehogs is called an array.

Some amphibians undergo dramatic transformations during metamorphosis.

Fact #493 · Animals

Certain ants build floating rafts during floods.

Fact #387 · Animals

Narwhals are known for their long spiral tusks.

Fact #376 · Animals

Certain species of frogs are active at night.

Fact #519 · Animals

A fox has keen hearing adapted for hunting small prey.

Fact #534 · Animals

Some mammals, like bats, use echolocation.

Fact #465 · Animals

Polar bears have black skin beneath their white fur.

Fact #26 · Animals

Some crabs can live both on land and in water.

Fact #473 · Animals