A 'murder of crows' is not just metaphorical — crows have been documented organizing against perceived threats.

Some sharks can reproduce without a mate in rare cases.

Fact #544 · Animals

Some birds build elaborate nests.

Fact #308 · Animals

Some insects undergo complete metamorphosis.

Fact #289 · Animals

Clownfish can change sex during their lifetime.

Fact #361 · Animals

Many species of beetles have hardened wing covers called elytra.

Fact #457 · Animals

Some amphibians can absorb oxygen through their skin.

Fact #328 · Animals

A wolf can travel dozens of miles in a single day.

Fact #545 · Animals

Certain bats pollinate flowers while feeding on nectar.

Fact #578 · Animals