We've shared our lives with dogs for thousands of years, but they still act in ways that baffle us. To help us understand them better, Dr. Stanley Coren, the undisputed expert on dog behavior, intelligence, and training, tells the story of how dogs evolved over time into the myriad forms and breeds we love today. Not simply domesticated wolves, dogs are actually much more complex than wild canines; their ability to adapt to a man-made world is far...