Mushing is a general term for a sport or transport method powered by dogs, and includes carting, pulka, scootering, sled dog racing, skijoring, freighting, and weight pulling. More specifically, it implies the use of one or more dogs to pull a sled on snow or a rig on dry land.
Origin of the term 
France was the first European power established in the Canadian Shield; accordingly, the coureurs des bois and the voyageurs of New France used the French word "Marche!", meaning "go" or "run", to command to the team to commence pulling. "Marche!" became "Mush!" for English Canadians. "Mush!" is rarely used in modern parlance, however; "Hike!" is more common in English.
The practice of using dogs to pull sleds dates back to at least 2000 BC. It originated in Siberia or North America, where many American Indian cultures used dogs to pull loads.
In 1534, Jacques Cartier discovered the Gaspé Peninsula and claimed the land in the name of Francis I of France. For the better part of a century the Iroquois and French clashed in a series of attacks and reprisals. Thats's why Samuel de Champlain arranged to have young French men live with the natives, to learn their language and customs and help the French adapt to life in North America. These men, known as coureurs des bois (runners of the woods), was the first european mushers in North America, extended French influence south and west and in 1609, New France controled all the Canadian Shield. In 1680, the intendant Duchesneau estimated that there was not one family in New France who did not have a “son, brother, uncle or nephew” among the Coureurs des Bois.
In 1759, the British army defeated the French at the Battle of the Plains of Abraham and control the Canadian Shield. Many coureurs des bois accepted the British rule and continued to use the sled dog. The French term Marche! becomes Mush! in English. During the Klondike Gold Rush, many prospectors came in the Yukon with sled dogs. This “Last Great Gold Rush” has been immortalized by American author Jack London in The Call of the Wild. Sled-dog become the common mode of transportation in Yukon and in the new US territory of Alaska.
In 1911, Norwegian explorer Roald Amundsen used sled dogs in a race to become the first person to reach the South Pole. He succeeded, while his competitor Robert Falcon Scott, who had instead used Siberian ponies, tragically perished.
By the time of the first World War, mushing had spread to European countries such as Norway, where dog sleds were used for nature tours, as ambulances in the woodlands and mountains, and to bring supplies to soldiers in the field.
During the 1925 serum run to Nome, 20 mushers and about 150 sled dogs relayed diphtheria antitoxin 674 miles (1,085 km) by dog sled across the U.S. territory of Alaska in five and a half days, saving the small city of Nome and the surrounding communities from an incipient epidemic.
Mushing can be utilitarian, recreational, or competitive. Mushing as a sport is practiced worldwide, but primarily in North America, northern Europe and the Alps. Racing associations such as the International Federation of Sleddog Sports (IFSS) and the International Sled Dog Racing Association (ISDRA) are working toward organizing the sport and in gaining Olympic recognition for mushing. It is the state sport of Alaska. The most famous sled dog races in the world are :
- Finnmarksløpet in Norway,
- Iditarod Trail Sled Dog Race in Alaska,
- La Grande Odyssée in France and Switzerland,
- Yukon Quest in Alaska and Yukon.
Although dogsled racing gets more publicity and is seen now as the primary form of mushing, recreational mushing thrives as an unorganized sport providing healthy outdoor form of winter exercise for families.
Mushing for utilitarian purposes includes anything from hauling wood or delivering milk or the mail to rural travel and equipment hauling. Dogs have been replaced by snowmobiles in many places, but some trappers and other isolated users have gone back to sled dogs, finding them safer and more dependable in extreme weather conditions.
Dog team members 
Dog team members are given titles according to their position in the team relative to the sled. These include leaders or lead dogs, swing dogs, team dogs, and wheelers or wheel dogs.
Lead dogs steer the rest of the team and set the pace. Leaders may be single or double; the latter is more common now, though single leaders used to be more common during the mid-20th century. Sometimes a leader may be unhitched (a loose or free leader) to find the trail for the rest of the team, but the practice is uncommon and is not allowed at races. Qualities for a good lead dog are intelligence, initiative, common sense, and the ability to find a trail in bad conditions.
Swing dogs or point dogs are directly behind the leader (one dog if the team is in single hitch). They swing the rest of the team behind them in turns or curves on the trail. (Some mushers use the term swing dog to denote a team dog.)
Team dogs are those between the wheelers and the swing dogs, and add power to the team. A small team may not have dogs in this position. Alternatively, the term may be used to describe any dog in a dog team.
Wheel dogs are those nearest the sled and musher, and a good wheeler must have a relatively calm temperament so as not to be startled by the sled moving just behind it. Strength, steadiness, and ability to help guide the sled around tight curves are qualities valued in "wheelers."
- White, Tim. "A History of Mushing Before We Knew It". International Federation of Sleddog Sports, Inc. Retrieved 2012-10-21.
- Riendeau, Roger E (2007). A brief history of Canada. Facts on File, cop. p. 36. ISBN 978-0-8160-6335-2. Retrieved 2010-08-11.
- Douglas Hunter, God's Mercies: Rivalry, Betrayal and the Dream of Discovery, Random House of Canada Limited, 2000, pp. 240–242
- “The Coureur de Bois.” The Chronicles of America. Accessed February 11, 2012 <http://www.chroniclesofamerica.com/french/coureur_de_bois.htm>
- "Roald Amundsen". PBS Online. Retrieved 2012-10-21.
- Myhre, Knut. "Nordic Dogsledding in Scandinavia". International Federation of Sleddog Sports, Inc. Retrieved 2012-10-21.
See also 
|Wikimedia Commons has media related to: Mushing|
- Carting for dryland mushing
- American Dog Derby
- Yukon Quest
- no:Finnmarksløpet - world's northernmost dog-sled race (Norwegian article)