The Standard Schnauzer is sociable, alert, a comedian, a formidable guard, and a family companion. Properly raised and trained, they are reliable companions with their own family's children. They are usually not unnecessary barkers. They are noted for guarding the family home and for displaying devotion to their immediate family. It learns fairly easily and has been used as a retriever both on land and in the water.
The breed originated in the Middle Ages in southern Germany and adjoining regions of Switzerland and France. Its ancestry might have included the Spitz and various other guard dogs. The Schnauzer's original uses included catching vermin such as rats and guarding.
The Standard Schnauzer has a harsh, wiry outer coat with minimal shedding and is salt and pepper or solid black in color. Ideal weight and height ranges vary considerably from one breed club standard to the next. Males range between 18 and 20 inches (45cm-50cm) high at the withers and generally weigh between 35 and 50 pounds (15.5 kg-22.5 kg). Females are ideally between 17 and 19 inches( 42.5 cm-47.5 cm) high at the withers and generally weigh between 30 and 45 pounds(13,5kg-20,2kg). The Standard Schnauzer can be expected to live for 12 to 14 years.
-From Wikipedia, the free encyclopedia and
The New Encyclopedia of the Dog, Bruce Fogle DVM; DK books, 2000

