While human beings have many living ancestors — bonobos, chimps, gorillas — our absence of fur immediately marks us as something different.
And though our big brains and bipedal posture have taken us to outer space, the reason our species transitioned to a mostly hairless body remains somewhat of a mystery.
Only a few other mammals share our genetic preference for sleek bodies, including rhinos, whales, elephants, and — everyone’s favorite — the naked mole rat.
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