After WWII researchers J.P. Scott and John L. Fuller, authors of Genetics and Social Behavior of the Dog, bred and cross-bred dogs in their quest to understand human heredity and behavior. Their research yielded a gold mine of data that Pfaffenberger turned into practical information for dog people.Today's dog breeder and trainer will learn: * How to help puppies achieve their maximum behavioral potential * How to utilize research on the critical stages of puppy development * About breed differences that make certain dogs suitable for specialized work * How to use this information to breed and socialize temperamentally sound dogs.