A reindeer group is also known as a HERD. A HERD of reindeer is typically made up of several dozen animals and is led by a dominant male. Reindeer herds are found in the Arctic and Subarctic regions of Europe, Asia, and North America. They are migratory animals, travelling long distances in search of food. Herds of reindeer are important to the cultures of many northern peoples, who rely on them for food, clothing, and transportation.