Harnesses are the best things to use, my pits love it, it doesnt choke them like a collar and they help u control the dog way better, i take my 7yr for a 45min walk and either to an open area where they can run, my 9month old pit loves to pull not pull me down but i lean back and let him pull my body weight, pits love this and def love to run bring water, swimming is also great for them
