Sled dog the decline of the working sled dog. Recreational mushing came into place to maintain the tradition of dog mushing. The desire for larger, stronger, load-pulling dogs changed to one for faster dogs with high endurance used in racing, which caused the dogs to become lighter than they were historically. Americans then began to import Siberian Huskies to increase the speed of their own dogs, presenting "a direct contrast to the idea that Russian traders sought heavier draft-type sled dogs from the Interior regions of Alaska and the Yukon less than a century earlier to increase the hauling capacity of their
Sled dog polar bears. The Chinook is a drafting and sled dog developed in New Hampshire in the early 1900s, and is a blend of Mastiff, Greenland Husky, German Shepherd, and Belgian Shepherd. It is the state dog of New Hampshire and was recognized by the AKC as a Working breed in 2013. They are described as athletic and "hard bodied" with a "tireless gait". Eskimo dogs that originated in Greenland, Greenland Dogs are heavy dogs with high endurance but little speed. They are frequently used by people offering dog sled adventures and long expeditions. There are more than 30,000 Greenland Dogs