The Kangaroo Rat Never Needs a Drink
In a hot desert, water is hard to find. Many animals travel far to reach a pond or a stream. The kangaroo rat, a small desert animal of North America, does not need to.
It may seem strange, but the kangaroo rat can live its whole life without taking a sip of water. It gets what it needs from its food. Its main meal is dry seeds. When its body breaks down those seeds, a little bit of water is made inside it, and the animal uses it.
The kangaroo rat also wastes very little water. Its kidneys make strong, dry waste, and its nose helps catch moisture from its breath before it escapes.
Its habits help too. The desert sun is very hot, so the kangaroo rat stays out of it. By day, it rests in a cool burrow, and it often plugs the door with soil to keep the heat out. At night, when the air is cooler, it comes out to hunt for seeds. It hops on its long back legs, a bit like a tiny kangaroo, and its long tail helps it balance.
Its name comes from this hopping. By being clever with every drop, the kangaroo rat has made a home in a place that looks empty to people.