- any of various small jumping rodents of the family Heteromyidae, of Mexico and the western U.S.
- an Australian desert rodent of the genus Notomys.
- any small leaping rodent of the genus Dipodomys, related to the squirrels and inhabiting desert regions of North America, having a stocky body and very long hind legs and tails: family Heteromyidae
- any of several leaping murine rodents of the Australian genus Notomys