The electric eel can detect the heartbeat of hidden prey through electric field sensing.

Many species of beetles have hardened wing covers called elytra.

Fact #457 · Animals

Orcas are highly social animals that live in pods.

Fact #395 · Animals

A group of wolves is called a pack.

Fact #112 · Animals

Some frogs can survive being frozen during winter.

Fact #24 · Animals

Some species of spiders can survive underwater for short periods.

Fact #414 · Animals

Octopuses have three hearts and blue blood.

Fact #1 · Animals

A hummingbird's heart can beat over 1,000 times per minute.

Fact #345 · Animals

Elephants have one of the longest gestation periods of any land animal.

Fact #386 · Animals