What factors affect the speed at which a dog can pull a vehicle ?
The factors include weight and fitness of the dog, the weight and balance of the vehicle, the weight of the driver, the size of the wheels and, lastly, the terrain. Given this many variables it is difficult to generalize about speeds carting dogs achieve, but as a general rule large breeds will trot at 12 16 km/hour over level ground. Some breeds prefer to pace rather than trot (that is, swinging left legs then right legs, rather than picking up the front left/back right legs and then the front right/back left legs), and can maintain their speed over considerable distances (more than a kilometer).
