Instruct: Classify a given review into positive or negative sentiment.
Query: This book saved our lives!

My husband and I became the reluctant parents of a bulldog lab mix. Devoted as she was to us she was unruly, hyperactive, and randomly aggressive toward other dogs. At the end of our ropes, we bought this book. It helped us realize that we had been unknowingly giving our dog the message that she was the leader of our pack. When we assumed leadership positions she not only behaved better, she seemed relieved that she no longer had to fill a role that she did not want. She is now a relaxed, obedient dog that we have grown to love and cherish more and more. Most wonderful of all she no longer displays aggression towards other dogs. No matter how happy and relaxed she is...we are much more. This book is worth far more than we paid for it.