Spartan is not to bad when we go on our walks but, I don't know how to get him to not cross in front of me. I've stepped on him a few times (poor guy) and now when i walk him I have to walk looking down. Any advise? I also have been working on him to leave it but, when we are out on the trail he seems to not pay attention to me and will pick up anything in the path and try and eat it. I know he's still a puppy but, I know I need to nab it in the butt now. Pls help. Thanks.