Since the first hungry wolf bravely approached an ancient cooking fire and was rewarded with a scrap of meat, our lives and the lives of dogs have been interwoven. Dogs have worked for us as warriors with ammunition strapped to their bodies. Dogs have gone through snow, icy seas, and into the dangerous rubble of collapsed buildings to rescue us. Dogs, with their spectacular ability to detect odors, keep us safe by finding drugs and explosives. They lead us if we cannot see and react for us when we cannot hear. Most of all, they love us - and we love them.This fascinating book by Norma Fleck Award-winner, Gena K. Gorrell, describes the dogs of history, the evolution of breeds for different purposes, and the training involved in preparing the modern-day heroes who find lost children, nab criminals, and point out contraband - heroes who just happen to be dogs.