Reindeer live in northern parts of Europe, Asia, and North America and love to eat lichen as a favourite food source. Also, reindeer share their territories with many other animals, most of which don’t bother them, although several species of wolf enjoy hunting reindeer as their own favourite food source. So how does a reindeer get by in such a harsh environment, looking for scarce food while avoiding ruthless predators? An Ocean Optics spectrometer system helps to show that reindeer have developed the useful ability to see deeper into the ultraviolet or “UV” region of the light spectrum.