<P> 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 living in Greenland . In the winter, they are a primary mode of transportation . Most hunters in Greenland favor dog sled teams over snowmobiles as the dog sled teams are more reliable . </P> <P> The Samoyed was developed by the Samoyede people of Siberia, who used them to herd reindeer and hunt in addition to hauling sleds . These dogs were so prized, and the people who owned them so dependent upon them for survival, that the dogs were allowed to sleep in the tents with their owners . </P> <P> Smaller than the similar - appearing Malamute, the Siberian Husky pulls more, pound for pound, than a malamute, but cannot pull as long . They weigh between 18 and 27 kilograms (40 and 60 lb), and have been selectively bred for both appearance and pulling ability . </P> <P> Numerous non-sled dog breeds have been used as sled dogs . Poodles, Irish setters, German shorthaired pointers, Labrador retrievers, Newfoundlands, and St. Bernards have all been used to pull sleds in the past . </P>

How many dogs pull a dog sled in the iditarod