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Science Reindeer eyes turn blue in winter, study finds

When the Arctic goes dark for the winter, reindeers eyes change from gold to blue, say scientists. 

By Charles Q. ChoiLivescience.com Contributor / October 30, 2013

© Kia Hansen

Reindeer may be best known for fictional Rudolph's glowing red nose, but now scientists find the animals can alter color elsewhere as well — the backs of their eyeballs change from gold in the summer to blue in the winter.