In Eastern Africa, inhabited by unique creatures from the family of rodents — naked mole rats. These animals may live up to 20 minutes in the absence of oxygen. Its size naked mole rat is no different from a regular mouse. In the 1970-ies it was found that this rodent species has a distinctive longevity and immunity to cancer. In addition, they are practically not sensitive to pain, and their skin does not react to acid.
When oxygen ceases to flow into the body of a digger, he abruptly begins to switch from glucose metabolism to fructose. About this fact said associate, Center of molecular medicine in England Gary Levin.
These hairless rodents live in underground colonies that consist of several dozen individuals. The colony is headed by a female, which is the only one in the whole pack with the right to procreate. Other members of the colony perform other work, as their reproductive system cannot produce offspring.
This lifestyle is seen in bees and ants, but mammals are extremely rare.