Jim Harrison is an American master. The Beast God Forgot to Invent offers stories of culture and wildness, of men and beasts and where they overlap. A wealthy man retired to the Michigan woods narrates the tale of a younger man decivilized by brain damage. A Michigan Indian wanders Los Angeles, hobnobbing with starlets and screenwriters while he tracks an ersatz Native-American activist who stole his bearskin. An aging "alpha canine," the author...