It may not be much to look at, but in everything else the naked mole rat seems to reign supreme. Following extensive research into its surprising longevity, a study has now found the reason for the rodent's immunity to cancer.

It may not be much to look at, but the naked mole rat is impressive in its long and active lifespan. Researchers believe that this small mammal's high levels of brain-protecting protein are the secret to its survival.