The book tells the story of a pup found in a sports field and then adopted to become part of a family of three dogs. It is Leo himself that tells the story of how he developed and the problems he came up against in his 'pack.' In telling his story, Leo explains how bad behavior and habits are easily learned and how he did not always understand why they were not accepted. The story then takes on a new turn as Leo then recounts how he came to be included in the pack of a world-famous dog trainer and behaviorist known as the Dog Whisperer. From that moment onward, his life changed and his behavior began to be more acceptable. He also found his true vocation in life running, jumping, and playing ball. A game that he excelled and made him a star of posters and photographs all over the world. Leo explains throughout in simple terms how poor behavior is developed in dogs and gives his thoughts on how good behavior can be encouraged and taught in a way that dogs understand. Leo tells his story from his viewpoint to help dog owners and potential owners, and especially children/young people, how dogs think and learn.