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The Perfect Protectors
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ancestors lived animal's autumn molt B.C.E. Ancient blood body hair cat's cats shed claws contain living cells cuticle dead cells dead hair eyebrows eyelashes eyes finger grow Fingernails grow fingernails to pick fingers and toes free edge furry coats gas that animals give your hair Gorillas grow the slowest grows the fastest hair and nails hair cells hair every day hair follicles hair grows hair its color hair stops growing hair strand hair-removal creams hair—A hairs contain hard hares turn head healthy ingrown toenail invisible gas Janet Hamlin keep keratin Lee Redmond mammals mandrill melanin melanin-making cells Melissa Stewart nail bed nail plate nail root Oil Spill older cells pigment that gives pocket mouse's probably Sebum sense their surroundings shaved their faces skin soft summer coat surround the tips tender tips thin hair Think tiny toasty warm tough vellus hairs waterproof whiskers white winter coat World Records