I am not a pro-but have dogs, including poodles and a GSD. I would put Baxter on a leash and do some more obedience work. He needs to know who is boss and not be territorial. I am using the book Clicking with Your Dog, by Peggy Tillman with my poodles. It is quick to refer to and each page has a step-by-step picture. Of courses, kids running and being loud can excite any dog and the dog should be put in a safe place during these times. Hope these suggestions can help-good luck!