"In all, perhaps a quarter of a million dogs saw active service in World War II< in nearly every corner of the globe where there was fighting. The Germans reportedly had 200,000 dogs in service as casualty dogs, sentries, scouts, guards, and intimidators of civilians. The Japanese deployed some 25,000 dogs... The Soviet Union put 50,000 into service, including antitank suicide dogs." (Pg. 297).This book does not purport to be a comprehensive history of America, nor of its dogs. Rather it presents representative tidbits from American history that illustrate the important role that dogs have played throughout the history of the region. In doing this, Derr has chosen to concentrate primarily on the explorers that traversed the land, and took dogs along on the trek, such as Lewis & Clark, Daniel Boone, Christopher Columbus and Alexander Mackenzie. He explores the contributions that dogs made as they accompanied the wagon trains that crossed the prairies, and in the gold fields of California and Alaska. He chronicles the role they have played in helping men explore inhospitable terrains such as during Richard Byrd's exploration of Antarctica, as well as their use as test subjects in early space missions. Derr also tackles such issues as: the animal rights movement, vivisection, the health and mental instability that can be associated with purebred dogs, and dogs that have killed humans - as well as those doggie heroes that have saved countless human lives.