Saint Bernards were once used to rescue people lost in the mountains! They are one of many breeds included in the American Kennel Club's working dog group. This book explores the working group's history and breeds, introducing why the dogs were bred and what traits tie them together. Special features include a list of top breeds, a breed size comparison, and a champion dog profile. Four two-page profiles offer more details about some of the group's most popular breeds. Readers will fall in love with this hard-working dog group!