run around to stay warm.
Neither. Reindeer live in the tundra primarily not in deserts.
The legend says he lives in the north and reindeer are the only animals that can serve the purpose that far north. It would get too cold for horses but reindeer are made for cold weather. Also, they can be tamed.
deers + cold
Reindeer have two layers, one thick one, one thin one, they prefer cold areas like Greenland and St. Matthew's Island. A suitable environment for reindeer is a cold climate with constant winds.
Reindeer are mammals. Mammals are homeostatic animals which maintain a warm body temperature.
The reindeer has a coat with two layers, a dense undercoat to provide warmth in the cold weather and a longhaired overcoat that is weather-resistent.
A large reindeer particular to North America.
Reindeer probably cannot survive in warm climates because all there food sources only grow in cold climates. Also, each individual hair on a reindeer's back are hollow and trap air to keep them cool. If the hair traps hot air, the reindeer will overheat. But there's always the possibility that the reindeer will adapt to the warmer climates and change there diet :D
pretty much anything that's body temperature and a bit moist will steam if exposed to cold.
Reindeer have fur, which is specialized for their cold environments. Their fur consists of two layers: a dense undercoat for insulation and longer guard hairs that help repel water and wind. This unique fur structure allows reindeer to thrive in harsh Arctic conditions.
Reindeer are also known as caribou, particularly in North America. They are a species of deer adapted to cold climates and are known for their distinctive antlers and migratory behavior. In various cultures, particularly among Indigenous peoples, reindeer are significant both ecologically and culturally.
Like all deer, reindeer(or caribou) grow a longer pelt in winter. Being from a bitter cold climate, their coat is longer than white tail or mule deer.