Hi my name is oshirl and I have blk lab named JAKAH he is almost 9 mon and a great deal of handful. I put leash on to try to work with him he jumps at leash bites it chews it. I have been trying lures,ignoring and etc. I have been trying to work with him to walk with me he pulls and etc, I have bought harness, leashes and also a training leash 20ft and just cant seem to get him to do what I want. He jumps at guest and anyone he sees. Any suggestions