Report Teaching him to walk(not drag) on leash in General Border Collie Discussion Posted June 20, 2014 So Karo is 6 months old and he is doing great. However, he has a habit of dragging everywhere we go, especially after work. I know the energy level he has is a factor in it, but I want to learn him to walk on loose leash. I have been adviced to seperate pulling and walking on loose leach. When I'm not feeling up for training him to do it, I use a harness on him and let him drag as much as he wants. But when I use a collar I will train him to walk on a loose leach. So harness = allowed to pull. Collar = not allowed, walk nice. Any advice to what I can do? I've tried stopping when he pulls previously (when I only used collar), but that didn't work. Maybe it'll change now that I'm switching between a collar and a harness.