Description
The overall color of the kangaroo rats can be anywhere between pale, sandy yellow, and dark brown, with a white underside and often with white banding across the thighs. Tails tend to be dark with white sides and a tuft of longer hairs. Facial markings vary from one species to another, but all have an oil gland between the shoulders.

Comments
small rodents native to North America. The common name derives from their bipedal form: as they hop in a manner similar to the much larger kangaroo, although they are not related...19 species of kangaroo rat are recognized. Their size varies from 10 to 20 cm, with a tail of equal or slightly greater length; the weight can be anywhere between 35 and 180 grams. The most distinctive feature of the kangaroo rats is their very long hind legs...found in arid and semi-arid areas . . . that retain some grass or other vegetation and thus fall under category xerocole. Their diet includes seeds, leaves, stems, buds, some fruit, and insects. Most kangaroo rat species use their burrows and buried caches nearby to store food against the possibility of bad seasons.

Source
Wikipedia