Skijoring is an exciting winter activity that combines the thrill of skiing with the excitement of horseback riding. It involves a skier being pulled by a horse or other animal, such as a dog, while navigating a course of jumps, gates, and other obstacles
From Wikipedia
Skijoring is a winter sport in which a person on skis is pulled by a horse, a dog, another animal, or a motor vehicle. The name is derived from the Norwegian word skikjøring, meaning "ski driving". Although skijoring is said to have originated as a mode of winter travel, it is currently primarily a competitive sport.