What is the only mammal whose eye color changes with the seasons?
Walrus
Reindeer
Armadillo
Hedgehog
While Rudolph’s nose may be red, his eyes are blue—except in the summer, when they are a golden hue. The transformation of a reindeer’s eye color in response to the changing seasons is a natural adaptation that enhances their vision under different lighting conditions. The key to this phenomenon lies in the tapetum lucidum, a reflective layer in their eyes. In the summer, their eyes are a golden shade. In the winter, however, their eyes turn a deep blue, which minimizes the reflection of light, assisting them during extended periods of darkness.
Correct Answer: Reindeer