My dog is quite the wild one when it comes to going for a walk. No matter how long i wait before we leave, he's still wild. Then, while were waling, he pulls constantly, and i hear him straining for breath from his choker. The only way ic an keep him at my side is if i run, but i cant run constantly, whenever he wants to go outside. I know there's a way i can train him to behave on the leash, to walk next to me, to follow me, but i cant seem to do it. I'm the dominant one except for when we go on a walk. I'd like to control this behavior.