Other likely symptoms include: 1  radiating pain in the face, jaw, or neck, 2  jaw muscle stiffness, 3  limited movement or locking of the jaw, 4  painful clicking, popping or grating in the jaw joint when opening or closing the mouth, 5  a change in the way the upper and lower teeth fit together.
Then you can train your dog to walk to heel, and prevent them getting the opportunity to pulling on the lead. Every time your dog gets to pull on the lead in the middle of your training program, they are getting a chance to perfect the pulling habit and reducing the effect of all your hard training work.
If you've tried a slip collar but had trouble, this tool may be the solution. I would recommend it for dogs that have trouble on the walk, particularly with pulling. If you place the collar on the lower part of the neck, you are actually helping your dog to pull you around. Watch an Alaskan sled dog pulling a load.