kangaroo rat

kangaroo rat

n.
  1. A jumping rodent of the genus Dipodomys of the family Heteromyidae, which lives in arid regions of Mexico and the western U. S. (Zool.)
  2. An Australian mammal of the genus Notomys. (Zool.)
  3. a small ratlike Australian kangaroo of the genus Potorous, also called the potoroo. (Zool.)