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The desert kangaroo rat (Dipodomys deserti) is a rodent species in the family Heteromyidae that is found in desert areas of southwestern North America. [2] It is one of the large kangaroo rats, with a total length greater than 12 inches (300 mm) and a mass greater than 3.2 ounces (91 g).
Kangaroo rats, small mostly nocturnal rodents of genus Dipodomys, are native to arid areas of western North America.The common name derives from their bipedal form. They hop in a manner similar to the much larger kangaroo, but developed this mode of locomotion independently, like several other clades of rodents (e.g., dipodids and hopping mice).
Heteromyidae is a family of rodents consisting of kangaroo rats, kangaroo mice, pocket mice and spiny pocket mice.Most heteromyids live in complex burrows within the deserts and grasslands of western North America, though species within the genus Heteromys are also found in forests and their range extends as far south as northern South America.
An animal was sighted in May 2011 off Peake Station and subsequently identified from a museum skin as a desert rat-kangaroo. The area was then surveyed in August the same year. An old nest with some small macropod like scats was found and some tracks were also found near a waterhole that might have been made by the desert rat-kangaroo.
The Santa Cruz kangaroo rat, more closely related to chipmunks and gophers than kangaroos or rats, had not been spotted in the area since the 1940s. The Santa Cruz kangaroo rat, more closely ...
A kangaroo rat narrowly escaping an attack by a Mohave rattlesnake. Kangaroo rats are a common prey items for many other desert animals. Typical predators of the Merriam's kangaroo rat include barn owls, great horned owls, coyotes, foxes, badgers, bobcats, and several snake species including sidewinders and glossy snakes.
Eight species have gone extinct in the modern era, all between the 1880s and the 1940s after the colonization of Australia began: the broad-faced potoroo, crescent nail-tail wallaby, desert bettong, desert rat-kangaroo, eastern hare-wallaby, Lake Mackay hare-wallaby, Nullarbor dwarf bettong, and toolache wallaby.
Dipodomyinae is the sister group of a Perognathinae-Heteromyinae clade; the two are estimated to have split about 22-24 million years ago.The most recent common ancestor of extant dipodomyines is thought to have lived 15-16 Ma ago, when the two genera split.