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 more flexible, their personalities far more diverse. Fascinating findings reveal which breeds were bred to become more dominant, affectionate, cooperative, or even dangerous. This practical, surprising book also presents -- for the first time -- the "Dog Behavior Inventory," a simple, fun test based on the personality-profiling questionnaires used in human psychological studies that you can administer to your own dog to get a detailed picture of his personality and how he compares to other members of his breed. Then, using the findings of the U.S. Army's once- classified studies of "Superdogs," you can train your pet to become a real-life equivalent of Lassie and Rin Tin Tin -- a dog who is not disturbed, angered, or frightened by anything. Filled with the entertaining anecdotes and scientific data that Dr. Coren's avid followers have come to expect and enjoy, this uniquely complete guide to dog psychology can help you to select a new companion and to understand and communicate better with your old friend.

A look at the facts and folklore of sleep that is mainly concerned with the problems of an increasingly sleep-deprived society, and the effects this has on people's work. The author shows, for example, that the "Exxon Valdez" oil spill and the space shuttle "Challenger" disaster were associated with people suffering from sleep deprivation. He also looks at some of the more subtle and insidious effects of sleep loss on our physical and mental health. The author attempts to answer a number of questions: Do fish sleep? Are there really "morning" and "night" people? Do some people really only need four hours sleep a night? He also includes accounts of sleep oddities, such as people who have committed murder in their sleep, and descriptions of fairly common disorders which may be responsible for unexplained infant deaths. The book also describes techniques to improve the quality and efficiency of the reader's own sleep.