Wow - I googled resource guarding and I am positive that is what we are dealing with. The descriptions and examples are all too familiar! I agree that the "alpha roll" seemed to intensify the situation. As I was reading some of the articles, he was sitting up on top of the chair. DH walked past and stopped right in front of us...and here came the growl. I got up and told him "down" and surprisingly he did get right down. He kept trying to get back up on the chair but I'd tell him "no, down" and he eventually stayed down. I am hoping that his behavior is because of previous training experiences, not because it is his temperament; apparently it can be either...