Sperm whales sleep vertically in groups, floating upright near the surface.

Some frogs carry their tadpoles on their backs.

Fact #354 · Animals

Some reptiles can survive long periods without food.

Fact #501 · Animals

Some insects can lift many times their body weight.

Fact #213 · Animals

A meerkat stands upright to scan for predators.

Fact #547 · Animals

Some insects communicate using pheromones.

Fact #469 · Animals

A chimpanzee can use tools to solve problems.

Fact #508 · Animals

A cheetah is built for speed with a lightweight body.

Fact #470 · Animals

Some birds can sleep while flying.

Fact #332 · Animals