I just came home from the dog pound with the most beautiful German Shepherd!  It's a medium to large-sized working dog with origins in Germany
What do you mean when you say working dog?
German Shepherds are herding dogs, and they they were originally developed to herd sheep!  Hence, they are actually working dogs!
Oh wow, do they do other jobs?
They do many other jobs!  For instance, they do disability assistance, search-and-rescue, as well as assist the police as police dogs
Oh ok what else is good to know about the breed?
to 1899. As part of the Herding Group, German Shepherds are working dogs developed originally for herding sheep. Since that time however, because of their strength, intelligence, trainability, and obedience, German Shepherds around the world are often the preferred breed for many types of work, including disability assistance, search-and-rescue, police and military roles, and acting. The German Shepherd is the second-most registered breed by the American Kennel Club and seventh-most registered breed by The Kennel Club in the United
Old German herding dogs
The old German herding dogs ('), including old German sheep-dogs or old German shepherd dogs (""') are a group of traditional types of working, herding dogs from Germany. They are landraces consisting of working strains of dog, and some of them are the types from which the modern German Shepherd Dog was developed as a standardised breed. The landraces are not recognised by the Fédération Cynologique Internationale, but some have their own standards which are for working ability, not appearance