Good question. What I want to know is how do you make your dog stick by you when off a leash, and come when you call him. I see some people who have dogs who stick by their side when in public and don't wander. Other peoples dogs chase the mailman, or rodents into the woods no matter how loud you yell at them. I wanna be able to do this with my dog. He sticks close for the most part, but if there are other dogs/people/animals/cars he catches interest too, he'll bolt. I'm concerned about this because I'm close to a major highway, and I've heard too many horror stories of Fido getting squished by a truck because he wouldnt listen and stick by his owner.