How To Walk A Dog. Does your dog pull on the leash? Have you tried leash training? This big dog rarely leaves his back yard. His owners laziness and this big dogs strength and anxiety means that he is unpredictable when out of the house. Expert dog-trainer, Victoria Stilwell is here to help. She shows this family how control this strong dog when on the leash, which will lead to him being less stressed and anxious at home.