Caribou are a type of deer that can be found in the northern regions of North America, Asia, and Europe. They are a medium-sized deer, typically weighing between 100-300 pounds and standing about 4 feet tall at the shoulder. Caribou are known for their distinctive fur, which is thick and shaggy to provide insulation against the cold weather. They also have large antlers, which they use for defending their territory and attracting mates. Caribou are a migratory species, meaning they travel long distances during their annual migration cycle.