Bracing the Wild: 18 Remarkable Animal Adaptations for Supreme Survival in the Toughest Terrains
The Kangaroo Rat's Kidneys
The Kangaroo Rat, a resident of North America's deserts, has kidneys that minimize water loss by excreting highly concentrated urine. This adaptation, along with the rat's ability to derive water from the seeds it eats, allows it to survive without ever drinking water.
