I've read the book by Jan Fennell and really enjoyed it. She really lays out in easy-to-understand terms the way to be a leader without being "aggressive", but by consistent behaviors that dogs understand. I enjoyed her stories, although oddly I don't remember the one about two JRTs wanting to kill each other. It has been awhile since I read the book but I don't recall that one. The only thing I remember disagreeing with is that she seemed to imply that every single behavioral problem a dog may have has to do with either the dog trying to be alpha or the dog believing it has the responsibility of being alpha, or feeling insecure and uncertain of the pack order. While I do believe a good many behavioral problems stem from this, I don't think ALL of them do in EVERY case. Sometimes she seems to oversimplify it some, but I would definitely recommend the book to others, especially new dog owners or people not very familiar with dog behavior and a dog's way of "thinking." She really explains and illustrates her points well. I think most dog behavioral issues could be helped by following her advice on how to take the leadership role in the relationship.