Heterocephalus glaber (otherwise known as the naked mole rat) is an underground rodent, although its disturbing appearance seems more fit for the next Aliens film. Living for up to 30 endless years, each of their out-of-the-mouth incisors can be moved independently like a pair of chopsticks and it seems as if this (cold-blooded!) mammal is completely impervious to cancer. It this awesome criature was just a bit nicer...

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