Hello again from us at deltacanine.net. This posts comes to you after conducting some dog training in Nashville, TN with a 10 month old Great Pyrenees dog. Ruger is a sweet pup and a quick learner. We were working on leash walking and basic sits and stays. After only one session using the leash and prong collar, Ruger was walking at my side with no tension on the leash. He was not pulling ahead like in the video of his first time walking on a leash. The right tool for the job makes a big difference.