Some animals can live without aging in the normal sense.

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

Fact #443 · Animals

Certain birds can recognize themselves in mirrors.

Fact #404 · Animals

Some marine mammals communicate through clicks and whistles.

Fact #525 · Animals

A sloth can take up to a month to digest a single meal.

Fact #441 · Animals

Some species of sharks must keep moving to breathe.

Fact #284 · Animals

A kangaroo cannot walk backward easily.

Fact #375 · Animals

A walrus uses its tusks to haul itself onto ice.

Fact #536 · Animals

Some ants farm fungi as a food source.

Fact #190 · Animals