While there are two known species of white squirrels in Asia, there aren’t any in North America, so if you’ve spotted an all-white or mostly white squirrel in the wild here, you’ve seen something quite rare. But to understand why, some background is in order.
Most of the white squirrels seen in North America are genetic color variants of the eastern grey squirrel.
For some of these eastern grey squirrels, their unique coats are caused by albinism, a congenital disorder characterized by little or no production of melanin. This lack of melanin makes the albino animal’s eyes appear pink or red, the color of its blood vessels.
However, squirrels with completely white coats and dark eyes are likely leucistic.
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