Herr Louis Doberman of Thuringen, Germany, was the man who crossed the Rottweiler, the Pinscher and the Black and Tan Terrier to attempt to produce the "ideal" guarding dog. The original purposes of guarding and attacking the stranger who invaded the property was the premise on which the Doberman was developed. Those that chose to have a guard dog expected them to attack strangers. Fenced yards were respected and the Doberman or other protective dog was a part of a family in early Germany. In fact, guard dogs were highly prized and were expected to be intelligent, obedient and courageous.