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Still Waters

Arctic Reindeer Eyes Change Colour

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Arctic reindeer can do something no other mammal can, though to be fair not many mammals can survive on the North Pole.

Twelve years ago, scientists discovered the fabled sled-pullers changed their eye color depending on the season, Live Science reported. They have brownish golden eyes in the summer (to counteract 24 hours of sunlight) and switch to blue in the winter to help see in the darkness.

http://www.universit...-the-summer.htm

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