kangaroo rat


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Related to kangaroo rat: Desert Kangaroo Rat

kangaroo rat,

small, jumping desert rodent, genus Dipodomys, related to the pocket mousepocket mouse,
small jumping rodent of W North America and as far south as N South America. More closely related to the squirrel than the true mouse, the pocket mouse gets its name from the fur-lined cheek pouches in which it carries its food. It varies in length from 3 to 12 in.
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. There are about 20 kangaroo rat species, found throughout the arid regions of Mexico and the S and W United States. Kangaroo rats have large, mouselike heads with big eyes, external fur-lined cheek pouches for food storage, and extremely long, tufted tails. In many species the tail is longer than the combined head and body length. The total length, including the tail, is 10 to 15 in. (25–37.5 cm), depending on the species. The front limbs are very short and the back limbs extremely long and stiltlike. The animal moves by long leaps, like a kangaroo, using its tail for balance and as a rudder for turning at high speeds. Kangaroo rats have long silky fur, pale brown above and white beneath, with black and white tail tufts and black face markings. Solitary, nocturnal creatures, they live in burrows by day and forage at night for seeds, grass, and tubers. Active hoarders, they sometimes dry their food in shallow pits just below the surface of the ground, then dig it up and store it in their burrows. Like a number of other desert animals, the kangaroo rat has physiological mechanisms for conserving the water that it obtains from food or produces metabollically, so that it does not need to drink. A related genus, Microdipodops, is called the kangaroo mouse, or dwarf kangaroo rat. It is about 6 in. (15 cm) in total length and is found in the Great Basin of the W United States. Kangaroo rats are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Rodentia, family Heteromyidae.
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References in periodicals archive ?
Yet this effort totaling more than 800 trap-nights, spread over 12 cycles of trapping events within the historical range, failed to yield any kangaroo rats other than D.
For years, each time a kangaroo rat avoided becoming rattlesnake food, Grace Freymiller and Malachi Whitford, Ph.D.
One video shows a kangaroo rat successfully kicking a snake - which is then sent flying through the air and crashing feet away.
Local extinctions of the giant kangaroo rat have been occurring as a result of their natural communities becoming highly fragmented due to agricultural development (Loew el al, 2005) as well as poisoning that occurred in the early 1900s when California ground squirrels were targeted (Williams, 1992; Whisson, 1999).
Since the kangaroo rat gained federal protection under the Endangered Species Act, natural resources managers at Camp Pendleton have worked closely with the U.S.
These stores of seeds are called "caches." A kangaroo rat may sometimes defend its caches from other kangaroo rats trying to steal them.
In the lower 40% of the inner medulla, AQP1 expression is relatively low or absent in most descending thin limb segments of the inner medulla of rat, chinchilla, and kangaroo rat, and in descending vasa recta in the lower 40% of the inner medulla of rat and kangaroo rat (Chou et al., 1993; Nielsen et al., 1995; Pannabecker and Dantzler, 2007; Issaian et al., 2012; Urity et al., 2012).
Results of assays for arenavirus RNA in the kidneys of the antibody-positive Nelson's pocket mice and the antibody-positive kangaroo rat were negative.
elator (2) at the ungrazed site concurs with Packard & Roberts (1973) observation that the Texas kangaroo rat and hispid cotton rat rarely co-occur.
The kangaroo rat, which lives in the desert of southeastern Arizona, is so good at conserving water that it doesn't have to drink at all.
Greene RA, Reynard C (1932) The influence of two burrowing rodents, Dipodomys spectabilis spectabilis (kangaroo rat) and Neotoma albigula albigula (pack rat) on desert soils in Arizona.