Weight pull matches start with either an empty cart or sled or at low weights. Carts may be placed on dirt, carpet or even rails. Dogs are sorted into classes by weight and then fitted with a specially constructed freighting harness designed to distribute the weight and minimize the chance of injury. At the start of a round, dogs are asked to pull the car or 16 feet within a set time frame. Dogs who successfully complete the round are eligible to go on to the next round. At the completion of each round, additional weight is added to the vehicle. The winner of each class is the dog who pulls the most weight.
While historically associated with freighting and carting dog breeds, today's weight pull competitions are open to any dog regardless of breed, size or gender.
Canine weight pulling competitions are sanctioned by various organizations, each with their own rules.
Proponents of weight pull cite the improved fitness and wellbeing of the dogs, especially working breeds. Handlers often cite improved bond with their dog and that no force or baiting with food is used to convince the dogs to pull. The activity has been criticized for cruel or harmful by animal rights activists who cite that dogs are at risk of physical injury including muscle strains and tears, allegations of doping the dogs or abusing them during training and that the sport may be used by some to prepare dogs for dog fighting.
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