The Giant Schnauzer is the largest of the three Schnauzer breeds, originally bred in Germany in the 17th century to assist on farms. It stands between 25.5-27.5 inches for males and 23.5-25.5 inches for females. The Giant Schnauzer has a square build, small button ears, a long tail, and a dense wiry coat that forms distinctive facial hair. They come in solid black or a pepper and salt color pattern. While usually quiet, Giant Schnauzers are inherently suspicious of strangers due to their guarding instincts but accept people once introduced.