Dog Harnesses, Leashes, and CollarsDog harnesses serve a variety of purposes for dog owners. From assisting disabled people to hauling a cart or sled, a harness's primary function is to pull or guide. A dog harness is also used as an alternative for leash attachment. Since standard collars only go around a dog's neck, they are more likely to cause choking. Harnesses wrap around a dog's torso and have reinforcement straps that allow for distribution of force to reduce the likelihood of a dog slipping free. Pet harnesses have become more popular in recent years and present an opportunity for dog owners to accessorize their furry companion with a cool, colorful and comfortable harness for activities.