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Kangaroo rat

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resources. Different species of kangaroo rat may have different seed caching strategies to coexist with each other, as is the case for the banner-tailed kangaroo rat and Merriam's kangaroo rat which have overlapping ranges. Merriam's kangaroo rats scatterhoard small caches of seeds in numerous small, shallow holes they dig. This is initially done close to the food source, maximizing harvest rates and reducing travel costs, but later redistributed more widely, minimizing theft by other rodents. Banner-tailed kangaroo rats larderhoard a sizable cache of seeds within the large mounds they occupy. This could decrease their time and energy expenses; they also spend less time on the surface digging holes, reducing the risk of predation. Being larger and more sedentary, they are better able to defend these larders from depredations by other rodents.
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several hundred dens. The burrow of a kangaroo rat is important in providing protection from the harsh desert environment. To maintain a constant temperature and relative humidity in their burrows, kangaroo rats plug the entrances with soil during the day. When the outside temperature is too hot, a kangaroo rat stays in its cool, humid burrow and leaves it only at night. To reduce loss of moisture through respiration when sleeping, a kangaroo rat buries its nose in its fur to accumulate a small pocket of moist air. The burrows of Merriam's kangaroo rats are simpler and shallower than those of banner-tailed kangaroo rats. Banner-tailed kangaroo rats also mate in their burrows, unlike Merriam's kangaroo rats.
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between February and May and produce two or three litters per year. Before mating, the male and female will perform nasal-anal circling until the female stops and allows the male to mount her. A Merriam's kangaroo rat female will allow multiple males to mount her in a short time, perhaps to ensure greater chances of producing offspring. Mating in banner-tailed kangaroo rats involves more chasing and foot drumming in the male before the female allows him to mate. Banner-tailed kangaroo rats mate on mounds and the more successful males chase away rival males. The gestation period of kangaroo rats lasts 22–27 days.
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they must conserve water. They do this in part by lowering their metabolic rate, which reduces the loss of water through their skin and respiratory system. Evaporation through the skin is the major route of loss. Merriam's kangaroo rats obtain enough water from the metabolic oxidation of the seeds they eat to survive and do not need to drink water at all. To help conserve water they produce very concentrated urine, via a process apparently associated with expression of
50: 385:. Kangaroo rats often leap a distance of 7 feet, and reportedly up to 9 feet (2.75 m) at speeds up to almost 10 feet/sec, or 10 km/h (6 mph). They can quickly change direction between jumps. The rapid locomotion of the banner-tailed kangaroo rat may minimize energy cost and predation risk. Its use of a "move-freeze" mode may also make it less conspicuous to nocturnal predators. 438:
extra seeds in seed caches. This caching behavior affects the rangeland and croplands where the animals live. Kangaroo rats must harvest as much seed as possible in as little time as possible. To conserve energy and water, they minimize their time away from their cool, dry burrows. In addition, maximizing time in their burrows minimizes their exposure to predators.
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Kangaroo rats live in complex burrow systems. The burrows have separate chambers used for specific purposes like sleeping, living, and food storage. The spacing of the burrows depends on the number of kangaroo rats and the abundance of food. Kangaroo rats also live in colonies that range from six to
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live in areas of low rainfall and humidity, and high summer temperature and evaporation rates. They prefer areas of stony soils, including clays, gravel, and rocks, which are harder than soils preferred by some other species (like banner-tailed kangaroo rats). Because their habitats are hot and dry,
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The young are born in a fur-lined nest in the burrows. They are born blind and hairless. For the first week, young Merriam kangaroo rats crawl, developing their hind legs in their second or third week. At this time, the young become independent. Banner-tailed kangaroo rats are weaned between 22 and
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mating system. Their reproductive output is highest in summer following high rainfalls. During droughts and food shortages, only a few females will breed. It appears that kangaroo rats can assess their local conditions and adjust their reproductive efforts accordingly. Merriam's kangaroo rats breed
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Kangaroo rats are primarily seed eaters. They will, however, eat vegetation occasionally, and at some times of the year, possibly insects as well. They have been seen storing the seeds of mesquite, creosote bush, purslane, ocotillo, and grama grass in their cheek pouches. Kangaroo rats will store
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with big hind legs, small front legs, and relatively large heads. Adults typically weigh between 70 and 170 grams (2.5 and 6.0 oz) The tails of kangaroo rats are longer than both their bodies and their heads. Another notable feature of kangaroo rats is their fur-lined cheek pouches, which are
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In contrast, banner-tailed kangaroo rats have more specific habitat requirements for desert grasslands with scattered shrubs; this species is also more threatened because of the decline in these grasslands. These are also dry areas but they tend to have more water available to them than Merriam's
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among male kangaroo rats in competition for access to females. Male kangaroo rats are generally more aggressive than females and are more dominant over them. Females are more tolerant of each other than males are and have more non-aggressive interactions. This is likely in part because the home
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Kangaroo rats inhabit overlapping home ranges. These home ranges tend to be small with most activities within 200–300 ft and rarely 600 ft. Home range size can vary within species with Merriam's kangaroo rats having larger home ranges than banner-tailed kangaroo rats. Recently weaned
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When on foraging trips, kangaroo rats hoard the seeds that they find. It is important for a kangaroo rat to encounter more food items than are consumed, at least at one point in the year, as well as defend or rediscover food caches and remain within the same areas long enough to utilize food
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Kangaroo rats are generally solitary animals with little social organization. Kangaroo rats communicate during competitive interactions and courtship. They do cluster together in some feeding situations. Groups of kangaroo rats that exist are aggregations and colonies. There appears to be a
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Kangaroo rats live in arid and semiarid areas, particularly on sandy or soft soils which are suitable for burrowing. They can, however, vary in both geographic range and habitat. Their elevation range depends on the species; they are found from below sea level to at least 7,100 feet (the
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ranges of females overlap less than the home ranges of males. Linear dominance hierarchies appear to exist among males but it is not known if this is the case for females. Winners of aggressive encounters appear to be the most active individuals.
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used for storing food. The coloration of kangaroo rats varies from cinnamon buff to dark gray, depending on the species. There is also some variation in length with one of the largest species, the
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kangaroo rats move into new areas not occupied by adults. Within its home range, a kangaroo rat has a defended territory consisting of its burrowing system.
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Jenkins, S. H.; Rothstein, A.; Green, W. C. H. (December 1995). "Food Hoarding by Merriam's Kangaroo Rats: A Test of Alternative Hypotheses".
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Randall, J. A. (January 1987). "Field Observations of Male Competition and Mating in Merriam's and Bannertail Kangaroo Rats".
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Morgan, K. R.; Price, M. V. (1992-12-01). "Foraging in Heteromyid Rodents: The Energy Costs of Scratch-Digging".
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Newmark, J. E.; Jenkins, S. H. (April 2000). "Sex Differences in Agonistic Behavior of Merriam's Kangaroo Rats (
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Schroder, G. D. (August 1979). "Foraging Behavior and Home Range Utilization of the Bannertail Kangaroo Rat".
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Waser, P. M.; Jones, W. T. (June 1991). "Survival and Reproductive Effort in Banner-Tailed Kangaroo Rats".
952: 2051: 1947: 1745: 1952: 1809: 1801: 1785: 1713: 983: 366: 62: 1817: 1737: 923: 413: 897: 1753: 1705: 462: 336:. The common name derives from their bipedal form. They hop in a manner similar to the much larger 1224:"Architecture of kangaroo rat inner medulla: segmentation of descending thin limb of Henle's loop" 1673: 1665: 400: 20: 16:
Genus of mammals belonging to the kangaroo rats, kangaroo mice, and pocket mice family of rodents
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smaller Australian marsupial relatives of kangaroos and wallabies known as rat-kangaroos
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Urity, V. B.; Issaian, T.; Braun, E. J.; Dantzler, W. H.; Pannabecker, T. L. (2012).
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25 days. Offspring remain in the mound for 1-6 more months in the maternal caches.
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American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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Reynolds, H. G. (February 1958). "The Ecology of the Merriam Kangaroo Rat (
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being six inches in body length and a tail length of eight inches.
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Mammal Species of the World: A Taxonomic and Geographic Reference
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exists in all species, with males being larger than females.
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10.1674/0003-0031(2000)143[0377:SDIABO]2.0.CO;2
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An Analysis of Intraspecific Variation in the Kangaroo Rat
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with a similar body plan and coloration; an example of
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Vibrational Communication: Spiders to Kangaroo Rats
1104:Mearns) on the Grazing Lands of Southern Arizona". 2120: 1141: 1139: 1137: 1135: 945:"Heteromyidae: Kangaroo Rats & Pocket Mice" 830:: 1-116. Chicago, University of Illinois Press. 1448: 1446: 1370: 1366: 1364: 1362: 1311: 1309: 1307: 1095: 1093: 1091: 1089: 1008: 1006: 1004: 1572: 1271: 1269: 1267: 1176: 858: 856: 344:, like several other clades of rodents (e.g. 1410: 1408: 1406: 1132: 1049: 936: 854: 852: 850: 848: 846: 844: 842: 840: 838: 836: 763:rodent native to southern and eastern Africa 1443: 1359: 1304: 1275: 1086: 1001: 970: 968: 812:"Kangaroo rats: Intraspecific Variation in 806: 804: 802: 800: 1579: 1565: 1414: 1264: 787:The Annals and Magazine of Natural History 707:rodent native to Australia; an example of 496: 48: 1403: 1247: 1215: 1170: 1069: 1050:Garrison, T.E.; Best, T.L. (April 1990). 870:Prevention and Control of Wildlife Damage 833: 783:"A new Genus of Mexican Glirine Mammalia" 720:rodent native to northern Africa and Asia 421:along a longer than usual segment of the 1145: 1099: 1012: 965: 920:U. S. Bureau of Land Management web site 797: 730:rodent native to China and North America 449: 340:, but developed this mode of locomotion 1546:United States Department of Agriculture 1452: 2121: 1548:Bulletin No. 1091, from September 1922 1486: 942: 862: 482: 332:, are native to arid areas of western 1886: 1885: 1560: 1043: 949:Arizona-Sonora Desert Museum web site 904: 1177:Tracy, R.L.; Walsberg, G.E. (2000). 780: 432: 423:descending limb of the loop of Henle 393: 360:Kangaroo rats are four or five-toed 2139:Extant Piacenzian first appearances 13: 976:"Animal Guide: Giant Kangaroo Rat" 14: 2155: 1527: 1536:Life History of the Kangaroo Rat 473: 61: 1377:The American Midland Naturalist 1346: 1183:Journal of Experimental Biology 2144:Taxa named by John Edward Gray 1157:University of California Press 824:Illinois biological monographs 774: 355: 1: 1730:San JosΓ© Island kangaroo rat 1146:Lidicker, W.Z. (Jr.) (1960), 767: 614:(Chisel-toothed kangaroo rat) 376: 1851:(Microdipodops megacephalus) 1746:Chisel-toothed kangaroo rat 953:Arizona-Sonora Desert Museum 670:(Banner-tailed kangaroo rat) 7: 1802:Banner-tailed kangaroo rat 1455:American Midland Naturalist 694: 686:(Narrow-faced kangaroo rat) 513: 445: 21:the spectacled hare-wallaby 10: 2162: 1818:Narrow-faced kangaroo rat 1240:10.1152/ajpregu.00549.2011 984:Public Broadcasting System 582:(San Quintin kangaroo rat) 459:D. nitratoides nitratoides 388: 367:banner-tailed kangaroo rat 18: 1894: 1868: 1829: 1786:Phillips's kangaroo rat ( 1706:San Quintin kangaroo rat 1638: 1600: 1587:Extant species of family 924:Bureau of Land Management 863:Howard, V.W. Jr. (1994). 678:(Stephens's kangaroo rat) 654:(Phillips's kangaroo rat) 590:(Heermann's kangaroo rat) 550:(Gulf Coast kangaroo rat) 542:(California kangaroo rat) 189: 182: 166: 159: 58:Scientific classification 56: 47: 34: 1859:(Microdipodops pallidus) 1810:Stephens's kangaroo rat 1780:(Dipodomys panamintinus) 1714:Heermann's kangaroo rat 1700:(Dipodomys elephantinus) 1674:Gulf Coast kangaroo rat 1668:(Dipodomys californicus) 1666:California kangaroo rat 912:"Merriam's Kangaroo Rat 726:– a non-desert-dwelling 606:(Merriam's kangaroo rat) 574:(Big-eared kangaroo rat) 463:California Living Museum 19:Not to be confused with 1804:(Dipodomys spectabilis) 1764:(Dipodomys nitratoides) 1738:Merriam's kangaroo rat 1698:Big-eared kangaroo rat 740:rodent of North America 646:(Panamint kangaroo rat) 622:(Nelson's kangaroo rat) 497:Mating and reproduction 414:Merriam's kangaroo rats 1778:Panamint kangaroo rat 1754:Nelson's kangaroo rat 1498:; Reeder, D.M (eds.). 1352:Randall, J.A. (2014). 986:. 2014. Archived from 980:Nature on PBS web site 662:(Dulzura kangaroo rat) 643:Dipodomys panamintinus 571:Dipodomys elephantinus 539:Dipodomys californicus 525:Subfamily Dipodomyinae 466: 277:Dipodomys panamintinus 223:Dipodomys elephantinus 199:Dipodomys californicus 2091:Paleobiology Database 1812:(Dipodomys stephensi) 1794:Dulzura kangaroo rat 1788:Dipodomys phillipsii) 1732:(Dipodomys insularis) 1716:(Dipodomys heermanni) 1676:(Dipodomys compactus) 1492:"Family Heteromyidae" 1195:10.1242/jeb.203.4.773 1106:Ecological Monographs 814:Dipodomus spectabilis 667:Dipodomys spectabilis 630:(Fresno kangaroo rat) 627:Dipodomys nitratoides 558:(Desert kangaroo rat) 501:Kangaroo rats have a 453: 295:Dipodomys spectabilis 265:Dipodomys nitratoides 38:Temporal range: Late 1857:Pale kangaroo mouse 1849:Dark kangaroo mouse 1820:(Dipodomys venustus) 1796:(Dipodomys simulans) 1762:Fresno kangaroo rat 1740:(Dipodomys merriami) 1708:(Dipodomys gravipes) 1682:Desert kangaroo rat 781:Gray, J. E. (1841). 736:– a closely related 651:Dipodomys phillipsii 638:(Ord's kangaroo rat) 598:(Giant kangaroo rat) 566:(Texas kangaroo rat) 534:(Agile kangaroo rat) 283:Dipodomys phillipsii 169:Dipodomys phillipsii 1770:Ord's kangaroo rat 1756:(Dipodomys nelsoni) 1748:(Dipodomys microps) 1722:Giant kangaroo rat 1690:Texas kangaroo rat 1684:(Dipodomys deserti) 1658:Agile kangaroo rat 943:Merlin, P. (2014). 675:Dipodomys stephensi 587:Dipodomys heermanni 547:Dipodomys compactus 520:Family Heteromyidae 490:dominance hierarchy 483:Social interactions 455:Tipton kangaroo rat 381:Kangaroo rats move 301:Dipodomys stephensi 235:Dipodomys heermanni 205:Dipodomys compactus 1724:(Dipodomys ingens) 1692:(Dipodomys elator) 1660:(Dipodomys agilis) 1373:Dipodomys merriami 1151:Dipodomus merriami 1102:Dipodomys merriami 914:Dipodomys merriami 810:Nader, I.A. 1978. 709:parallel evolution 683:Dipodomys venustus 659:Dipodomys simulans 603:Dipodomys merriami 579:Dipodomys gravipes 467: 362:heteromyid rodents 307:Dipodomys venustus 289:Dipodomys simulans 247:Dipodomys merriami 229:Dipodomys gravipes 2116: 2115: 2078:Open Tree of Life 1888:Taxon identifiers 1879: 1878: 1842: 1772:(Dipodomys ordii) 1651: 1541:Project Gutenberg 1511:978-0-8018-8221-0 1061:Mammalian Species 818:Dipodomys deserti 619:Dipodomys nelsoni 611:Dipodomys microps 555:Dipodomys deserti 433:Food and foraging 394:Range and habitat 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rats. 425:in the kidney. 396: 391: 379: 358: 319:, small mostly 304: 298: 292: 286: 280: 274: 271:Dipodomys ordii 268: 262: 256: 250: 244: 238: 232: 226: 220: 214: 208: 202: 196: 178: 172: 149: 60: 43: 36: 28: 17: 12: 11: 5: 2159: 2158: 2147: 2146: 2141: 2136: 2131: 2114: 2113: 2111: 2110: 2100: 2087: 2074: 2061: 2048: 2035: 2022: 2009: 1996: 1983: 1970: 1957: 1944: 1931: 1916: 1900: 1898: 1892: 1891: 1877: 1876: 1869: 1866: 1865: 1863: 1862: 1854: 1845: 1843: 1827: 1826: 1824: 1823: 1815: 1807: 1799: 1791: 1783: 1775: 1767: 1759: 1751: 1743: 1735: 1727: 1719: 1711: 1703: 1695: 1687: 1679: 1671: 1663: 1654: 1652: 1636: 1635: 1633: 1632: 1626: 1620: 1614: 1608: 1601: 1598: 1597: 1584: 1583: 1576: 1569: 1561: 1555: 1554: 1549: 1529: 1528:External links 1526: 1525: 1524: 1510: 1481: 1480: 1461:(1): 211–213. 1442: 1423:(3): 771–777. 1402: 1383:(2): 377–388. 1358: 1345: 1303: 1263: 1214: 1189:(4): 773–781. 1169: 1131: 1112:(2): 111–127. 1085: 1042: 1023:(4): 657–665. 1000: 964: 935: 903: 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1739: 1731: 1723: 1715: 1707: 1699: 1691: 1683: 1675: 1667: 1659: 1640: 1639: 1593:Dipodomyinae 1589:Heteromyidae 1534: 1500: 1496:Wilson, D.E. 1488:Patton, J.L. 1458: 1454: 1420: 1416: 1380: 1376: 1372: 1348: 1323: 1317: 1281: 1277: 1231: 1227: 1217: 1206:. 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Gray 2129:Dipodomys 1940:Dipodomys 1926:Dipodomys 1896:Dipodomys 1641:Dipodomys 1604:Kingdom: 1165:902701222 896:ignored ( 886:cite book 820:Stephens" 748:marsupial 461:) at the 383:bipedally 329:Dipodomys 326:of genus 321:nocturnal 146:Dipodomys 81:Kingdom: 75:Eukaryota 2057:12700003 1905:Wikidata 1872:Category 1624:Rodentia 1618:Mammalia 1612:Chordata 1610:Phylum: 1606:Animalia 1520:62265494 1490:(2005). 1397:86370238 1258:22237592 1203:10648219 695:See also 514:Taxonomy 446:Behavior 406:D. ordii 346:dipodids 338:kangaroo 121:Family: 115:Rodentia 105:Mammalia 95:Chordata 91:Phylum: 85:Animalia 71:Domain: 42:– Recent 40:Pliocene 2106:8328098 2031:1396142 2005:2439509 1911:Q120094 1622:Order: 1616:Class: 1475:2425723 1437:1940579 1417:Ecology 1340:2265821 1319:Ecology 1298:1941473 1278:Ecology 1249:3774486 1126:1942205 1080:3504290 1037:1936601 1016:Ecology 761:pedetid 744:Kultarr 728:dipodid 718:dipodid 408:priscus 389:Ecology 324:rodents 184:Species 141:Genus: 111:Order: 101:Class: 2103:uBio: 2083:342249 2044:180232 1992:1DPDMG 1518:  1508:  1473:  1435:  1395:  1338:  1296:  1256:  1246:  1201:  1163:  1124:  1078:  1035:  714:Jerboa 177:, 1841 154:, 1841 2096:41678 2070:10016 2026:IRMNG 2018:44098 1979:14120 1953:73570 1494:. 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Index

the spectacled hare-wallaby
smaller Australian marsupial relatives of kangaroos and wallabies known as rat-kangaroos
Pliocene

Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Mammalia
Rodentia
Heteromyidae
Dipodomyinae
Dipodomys
J. E. Gray
Type species
Dipodomys phillipsii
J. E. Gray
Species
Dipodomys agilis
Dipodomys californicus
Dipodomys compactus
Dipodomys deserti
Dipodomys elator
Dipodomys elephantinus
Dipodomys gravipes
Dipodomys heermanni
Dipodomys ingens
Dipodomys merriami
Dipodomys microps

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