The term Mackenzie River Husky describes several overlapping local populations of arctic and subarctic sleddog type dogs, none of which constitutes a breed. Most prominent and current of these are the sleddogs of Donna Dowling and others in the interior of Alaska. These dogs are described as standing 26 to 29 inches (66 to 74 cm) in height and weighing 63 to 104 pounds (29 to 47 kg). Usually long-coated, they are rangy, deep-chested and long-legged, built for heavy freighting in single file through deep snow. Their colors are the usual northern-dog range of black and white, shades of grey and sable, tan, or blonde.