Naked mole rat
Naked mole rats may not be the world's most beautiful animals, but they are fascinating. They have no fur, but aren't completely hairless: sensory whiskers on the nose and tail help them navigate dark underground tunnels. The queen is the only female in the colony that breeds and her offspring devote their lives either to protecting the colony or digging burrows with their powerful, ever-growing incisors. Naked mole rats can live for over 20 years, an age unprecedented in small rodents. Unlike most other mammals, naked mole rats can't maintain steady body temperature - they are essentially cold-blooded.
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