25. Kangaroo Rat
Kangaroo rats are remarkable rodents adapted to arid environments, obtaining all necessary water from the seeds they consume. Their kidneys are highly efficient, producing urine with concentrations up to 6,000 mOsm/L, significantly higher than that of humans. This adaptation minimizes water loss through excretion. Additionally, their nasal passages reabsorb moisture from exhaled air, further conserving water. For more information, see Australian Museum.