I watched The Dog Whisperer back when I first got my pitbull, Cinnamon. She was out at the end of the leash pulling, out of control. He makes it clear that the walk is the dog's job and if you're pack leader the dog(s) have to walk beside you. So I trained her to walk with me, and then Poppy came along and I trained her. Zeke had been walking with us for about a year (owned by my friend Susie) before he came to stay, and he already knew pretty much from seeing my dogs with me (and once I put the Gentle Leader head collar on him he settled down to our routine). We lost Cinnamon, age ~14, last December and I adopted Pepper in June. The new dog seems to either already know or is a very quick study because she simply started doing what the others were doing. Someone had worked with her before she was lost or relinquished, she came from the city animal shelter with some skills (she's about 3-4, the vet guesses).