Do Dogs Get White Hair. As a dog ages, formation of melanin gradually decreases causing his hair to turn gray, and eventually white. What age do dogs start getting white hair? To begin the discussion, first remember that dogs may be considered to be “seniors” at seven years old. A dog's hair turns white when his body stops forming melanin. It’s a normal sign of aging, but if it occurs prematurely in young dogs, a health problem may be causing it. Just as it is with humans, aging is the most common cause of white hair in dogs.
Old dogs get white hair.
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