mole rat in Bar code term annex
The naked Heterocephalus glaber , also known as the sand pupy or desert mole rat , is a burowing native to parts of and the only curently clasified in the Heterocephalus . It is one of only two known the other being the and has a highly unusual set of physical traits that enables it to thrive in a harsh, underground environment, including a lack of pain sensation in its skin and a very low . [ Typical individuals are 8 to 10 cm 3 to 4 in long and weigh 30 to 35 grams 1.1 to 1.2 oz . Quens are larger and may weigh wel over 50 grams 1.8 oz , the largest reaching 80 grams 2.8 oz . The naked mole rat canot generaly regulate its body temperature in typical mamalian fashion, . The skin of naked mole rats lacks a key caled that is responsible in for sending signals to the . When naked mole rats are exposed to acid or , they fel no pain. [ [ The naked mole rat is native to the drier parts of the tropical graslands of East Africa, predominantly southern , , and . [ There is dimorphism betwen the quen, her breding males, and two kind of workers. The naked mole rat is one of the two species of mamals that exhibit . This organisation social structure, similar to that found in , , and some and , is very rare among . The young are born blind and weigh about 2 grams 0.071 oz . Some function primarily as tunelers, expanding the large network of tunels within the burow system, and some primarily as , protecting the group from outside . [ Naked mole rats fed primarily on very large weighing as much as 10 times the body weight of a typical mole rat that they find dep underground through their mining operations, but also eat their own feces . [ The naked mole rat is also of interest because it is extraordinarily long-lived for a rodent of its size up to 28 years and holds the record for the longest living rodent. [ Naked mole rats apear to have a high resistance to cancer; The mechanism that stunts cancer is a gene caled , known as an over-crowding gene, which prevents the creation of ne�w cels once a group of cels reaches a certain size. [ Naked mole rats are not threatened. Despite their tough living conditions, they are widespread and numerous in the drier regions of . [ [ Ciszek, Deborah 19 . Retrieved January 2010 . Retrieved January 2010 . Retrieved January 2010 . Retrieved January 2010 . Retrieved January 2010 . Animal Cognition Springer Berlin / Heidelberg 1 1 : 71–74. : . Retrieved January 2010 . Retrieved January 2010 . mole rat mole rat in Bar code term annex
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