Elephants have been observed mourning deceased herd members.

Some fish build intricate sand nests.

Fact #436 · Animals

A wolf can travel dozens of miles in a single day.

Fact #545 · Animals

Some insects glow through bioluminescence.

Fact #529 · Animals

A blue whale's tongue can weigh as much as an elephant.

Fact #443 · Animals

The Amazon rainforest supports millions of species.

Fact #302 · Animals

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

The platypus is one of the few mammals that lay eggs.

Fact #382 · Animals

Certain fish clean parasites off larger fish.

Fact #523 · Animals