Naked Mole Rat (Heterocephalus glaber)

The naked mole-rat , also known as the sand puppy or desert mole rat, is a burrowing mammal native to parts of East Africa and is the only species currently classified in the genus ''Heterocephalus''. The naked mole-rat and the Damaraland mole-rat are the only known eusocial mammals. It has a highly unusual set of physical traits that enable it to thrive in an otherwise harsh underground environment; it is the only mammalian thermoconformer. .

The mole rat also lacks pain sensitivity.. more