The Standard Schnauzer is the original breed of the three breeds of Schnauzer, and despite its wiry coat and general appearance, is not related to the British terriers. Rather, its origins are in old herding and guard breeds of Europe. Generally classified as a working or utility dog, this versatile breed is a robust, squarely built, medium-sized dog with aristocratic bearing. It has been claimed that it was a popular subject of painters Sir Joshua Reynolds, Albrecht Dürer and Rembrandt, but actual proof remains elusive.
Standard Schnauzers are either salt-and-pepper or black in color, and are known for exhibiting many of the "ideal" traits of any breed. These include high intelligence, agility, alertness, reliability, strength and endurance. This breed of dog has been very popular in Europe, specifically Germany where it originated. The breed was first exhibited at a show in Hanover in 1879, and since then have taken top honors in many shows including the prestigious "Best in Show at Westminster Kennel Club" in the United States in 1997.
--- end of quote
Info from Wiki.