Book excerpt: The heartwarming and unforgettable story of a family and the wondrously neurotic dog who taught them what really matters in life. Now with photos and new material. Is it possible for humans to discover the key to happiness through a bigger-than-life, bad-boy dog? Just ask the Grogans. John and Jenny were just beginning their life together. They were young and in love, with not a care in the world. Then they brought home Marley, a wiggly yellow furball of a puppy. Life would never be the same. Marley grew into a barreling, ninety-seven-pound streamroller of a Labrador retriever. He crashed through screen doors, gouged through drywall, and stole women's undergarments. Obedience school did no good -- Marley was expelled. But just as Marley joyfully refused any limits on his behavior, his love and loyalty were boundless, too. Marley remained a model of devotion, even when his family was at its wit's end. Unconditional love, they would learn, comes in many forms. Marley & Me is John Grogan's funny, unforgettable tribute to this wonderful, wildly neurotic Lab and the meaning he brought to their lives.