your dog is going to the bathroom. just as he finishes going, offer that amazing treat from your pocket. don't use this special treat for any other purpose except to train your pooch to potty on command. now, tell him what a good boy he is. remember, enthusiasm is as important as the lunch meat.
there's one more step in this process. play with your pooch when he finishes the treat. the play session can last as short as a minute or as long as you have time for.
after about a week of repeating the same potty program, become a tad more active. just a split second before your dog is 