As dogs take their place as coddled family members and their numbers balloon to over 77 million in the United States alone, it's no surprise that canine culture is undergoing a massive transformation. Now subject to many of the same questions of rights and ethics as people, the politics of dogs are more tumultuous and public than ever-with fierce moral battles raging over kill shelters, puppy mills, and breed standards. Incorporating interviews and research from scientists, activists, breeders, and trainers, What's a Dog For? investigates how dogs have reached this exalted status, and why they hold such fascination for us humans.