Very few dog trainers have not been influenced by Dr. Ian Dunbar's dog-friendly philosophy. In the 1970s, Dr. Dunbar sparked a dramatic shift in dog training away from leash corrections and drill-sergeant adult dog classes based on competitive obedience and toward a positive approach using toys, treats, and games as rewards for teaching basic manners, preventing behavior problems, and modifying temperament. Before Dr. Dunbar there were no classes for puppies, very few family dog classes, and not much fun in dog training. His positive approach to training revolutionized the field, especially...