Him barking while in his kennel is most likely from loneliness, I understand that, but I try to bring him downstairs with me, he gets too hyped up and wants to run all over the house and get into things. Including chasing the cats, which is not allowed, and my cats have free roam of the house. That is not going to change. I know he's just a puppy, and needs to learn, but how can I teach him? Everybody says I won't regret getting a GSD, and I don't want to regret it! I want him to prove to me that he is a wonderful, obedient dog!