My boy Bozley is great in the house doing any obediance work, but when I take him outside for a walk I can not get him to pay attention to me. Trying everything to get him to stop pulling (stopping, changing directions) but I cant reward him cause he is not interested me or the clicker. I have took him for obedeiance level one where we did loose leash walking and he was great at it....what is going on? any tips for me??