The reindeer, also known as Caribou in North America, is a species of deer belonging to the Cervidae family. These animals have a circumpolar distribution and are native to Arctic, Subarctic, tundra, boreal forests of Greenland, mountainous regions of Northern Europe, Siberia and North America. Reindeers are unique in their ability to adapt to extreme cold weathers through their excellent insulation, which is made possible by the presence of hollow hairs that trap air close to their bodies. They are also known for their remarkable endurance, speed, and strength, which make them a vital resource for many nomadic tribes in the Arctic regions. The importance of these animals cannot be overstated, as they play a significant role in the culture and economy of the communities that rely on them.