Even man's best friend has to earn its keep sometimes These dog breeds have been designed to be good at specific jobs such as herding, hunting, and guarding. Take a close look at the top 25 working dogs, including the Pembrokeshire Welsh Corgi, the late queen Elizabeth's favorite breed; the Saint Bernard, a specialist in mountain rescue; a Siberian Husky, strong with incredible endurance, and more. Fun bite-size facts...