The Doberman Pinscher was named after Louis Doberman, a German who developed the breed in the late 1800's. Doberman was a tax collector working in rough neighborhoods, rightfully afraid of being attacked. He decided to create a new breed, an aggressive, alert protection dog, to help him in his work. It is thought that he crossed German Pinschers with Rottweillers, Beaucerons, Pinschers, Greyhounds and other breeds to create the sleek and highly intelligent Doberman Pinscher. True to his original purpose, the Doberman excels at police, military and guard work. The breed has been used to patrol department stores to catch "sleep-ins", thieves hiding in the store after hours.