In summer, Arctic reindeer eyes are a golden hue. In winter, they turn deep blue. So far as researchers know, this seasonal shift is unique. Neither horses, nor house cats, nor any other mammals ...

Why reindeer eyes turn blue in the dark Arctic winter. Here's looking at you: A close-up view of a reindeer in the Arctic. Kia Hansen. Oct. 30, 2013, 12:44 PM EDT. By Charles Q. Choi.

Animals with blue eyes are a rare occurrence in nature due to being linked to recessive genetics, ... White Tiger. White fur is linked ... two will always result in blue eyes. 6. Arctic Foxes.

Arctic reindeer can change its eye colour from golden in summer to deep blue in the winter. They posses a light-reflecting layer of tissue called Tapetum lucidum that reflects most light back to ...

What color are reindeer eyes? Depends on the season. An astrophysicist and an eye expert teamed up to solve the mystery of how and why reindeers’ eyes switch from yellow to blue in wintertime.