Why Do Reindeer Eyes Change Color?

Did you know reindeer eyes can change color with the seasons?

During the bright Arctic summer, reindeer eyes appear golden or yellow. But when the long, dark winter arrives, their eyes can become deep blue. This fascinating seasonal change is linked to the tapetum lucidum, a reflective layer inside the eye that helps reindeer make better use of limited available light.

This incredible adaptation helps reindeer survive and navigate one of the darkest environments on Earth.

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