'Rudolph' Has Keen Eyes

Ultraviolet vision may explain how Santa's reindeer see so well in snowy landscapes.

A recent study reveals the ability of reindeers to see ultraviolet light. According to scientists, this probably also allows them to detect food and predators in a very white environment too.According to the study reindeers are the first large mammals been discovered to posses this ability.

"Reindeer are mammals and what we find may be related to humans," said Karl-Arne Stokkan, an Arctic biologist at the University of Tromsø in Norway. "In the view of potential climate change, we have also realized that reindeer may be an important 'signal-animal' because of their strong adaptation to an environment believed to suffer the biggest changes."