The glasswing butterfly has transparent wings — the scales are so sparse as to be nearly invisible.

Some ants can carry many times their own body weight.

Fact #132 · Animals

Ravens can solve complex problems in experiments.

Fact #380 · Animals

Certain species of ants farm aphids for food.

Fact #360 · Animals

Some birds build elaborate nests.

Fact #308 · Animals

Some snakes can sense heat using specialized pits.

Fact #408 · Animals

A zebra’s stripes may help confuse predators.

Fact #500 · Animals

Some insects have compound eyes made of many lenses.

Fact #513 · Animals

Certain fish change sex during their lifetime.

Fact #503 · Animals