The Giant Schnauzer is a large-sized, squarely-built dog. They are sturdy and muscular, and always on the alert. They have looking facial hairs on the eyebrows, moustache, which gives them a distinct look. The hairs in the legs are longer that adds to their extraordinary distinct appearance. The Giants have a rectangular-shaped head and a body length that equals the height and the withers.
Historically, the Schnauzer-type dog has been depicted in art and sculptures as early as the 1400s. The Giant Schnauzer evolved from the Standard Schnauzer originally bred in Germany. The Giant were used as cattle herders and pig farms in the Bavarian highlands region in the 15th century until the railroads were developed. Their popularity surged by the 19th century in the towns as guard dogs. During both world wars, they were used as police and war dogs. This resulted in the significant reduction of numbers for the breed, causing near extinction. With the help of some kennel clubs, the breed was able to reinvigorate. The dogs began appearing in America in 1909.