Husky Dog

Examples of these landraces in modern times have been selectively bred and registered with various kennel clubs as modern purebred breeds, including the Siberian Husky and Greenland Husky. The Sakhalin Husky is a Japanese sled dog related to the Japanese Spitz and Akita Inu. The Alaskan Husky is a type of sled dog found in Alaska (rather than Siberia or other Arctic areas) and the Mackenzie River Husky is a subtype referring to different dog populations in the Arctic and subarctic regions of Alaska and Canada.
Crossbreeds
Purebred working dogs are often deliberately crossbred with other breeds to enhance working abilities such as speed in a sled-racing dog. Joe Runyan (former Iditarod winner) describes Husky sled dogs as "an ever changing concept". Working ability is more important than keeping a breed "pure" so that it can be registered with a kennel club.