Some species of spider can go years without food — surviving on fat reserves alone.

Certain birds build hanging nests from woven plant fibers.

Fact #471 · Animals

A crocodile’s teeth are replaced throughout its lifetime.

Fact #532 · Animals

Crows can recognize individual human faces.

Fact #15 · Animals

Certain ants can survive floods by forming living rafts.

Fact #550 · Animals

The Earth's surface is constantly reshaped by natural forces.

Fact #224 · Animals

Some birds can fly for months without landing.

Fact #164 · Animals

Some plants respond to changes in light and touch.

Fact #95 · Animals

Some insects can survive being frozen.

Fact #560 · Animals