Blue whales are the largest animals known to have ever lived.

Some ants farm fungi as a food source.

Fact #190 · Animals

Some birds sing complex songs to mark territory.

Fact #517 · Animals

Some species of sharks must keep moving to breathe.

Fact #284 · Animals

Some butterflies migrate seasonally.

Fact #505 · Animals

Some species of snakes give live birth instead of laying eggs.

Fact #540 · Animals

Many birds use Earth's magnetic field for navigation.

Fact #388 · Animals

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

Some insects can lift many times their body weight.

Fact #213 · Animals