Cats may head-butt humans as a sign of affection.

Some insects communicate using pheromones.

Fact #469 · Animals

Some species of frogs can survive being partially dehydrated.

Fact #444 · Animals

Bees have five eyes.

Fact #356 · Animals

Bats are the only mammals capable of sustained flight.

Fact #58 · Animals

Some species of octopus can escape through very small openings.

Fact #451 · Animals

A camel can drink large amounts of water in a short time.

Fact #458 · Animals

Octopuses have three hearts and blue blood.

Fact #1 · Animals

Some species of octopus can change both color and texture.

Fact #343 · Animals