Sled dog racing Dog Derby mushers were international celebrities to such degree that one photogenic female musher named Lydia Hutchinson was tapped by a producer to star in his movie. She may have been on her way to being a movie star when she died of pneumonia in 1930. The American Dog Derby popularized dogsled racing in the 1920s and other dogsled races were organized in towns and cities across North America and Northern Europe in its wake. The most famous long-distance race is the Iditarod Trail Sled Dog Race. Also known as the "Last Great Race on Earth", the Iditarod is roughly
Sled dog hold heat in, and sprint dogs have short coats that let heat out. Most sled dogs have a double coat, with the outer coat keeping snow away from the body, and a waterproof inner coat for insulation. In warm weather, dogs may have problems regulating their body temperature and may overheat. Their tails serve to protect their nose and feet from freezing when the dog is curled up to sleep. They also have a unique arrangement of blood vessels in their legs to help protect against frostbite. Appetite is a big part of choosing sled dogs; picky dogs off trail