I love science.
From the latest online Smithsonian Magazine:
A fraction of reindeer—the species of deer scientifically known as Rangifer tarandus, native to Arctic regions in Alaska, Canada, Greenland, Russia and Scandinavia—actually do have noses colored with a distinctive red hue.
Now, just in time for Christmas, a group of researchers from the Netherlands and Norway have systematically looked into the reason for this unusual coloration for the first time. Their study, published yesterday in the online medical journal BMJ, indicates that the color is due to an extremely dense array of blood vessels, packed into the nose in order to supply blood and regulate body temperature in extreme environments.