The Giant Schnauzer is a separate breed from the Miniature and Standard. Their country of origin is Germany. Breeds were developed for specific work in the 1600's; this breed was developed to be used as drovers of sheep and cattle and as a guard dog. Its coat was also influenced by weather and living conditions.
By the beginning of the 20th century, the Giant Schnauzer wasn’t used much for driving cattle, but he still found work at butcher shops, stockyards, and breweries. The dogs were trained for police work, and it is an occupation they have taken to ever since, more often in Europe than the United States.
The Giant Schnauzer was recognized by the American Kennel Club in 1930. Today he ranks 94th among the breeds registered by the AKC.