Miniature schnauzer known for his distinguished, handsome appearance, the Miniature Schnauzer is characterized by its whiskers and double coat, which has a hard, wiry outer coat and close, soft undercoat. Coat colors can be salt and pepper, black and silver and solid black. Despite his small stature, the Miniature Schnauzer can give an alarm just as well as a larger dog. That, combined with his naturally protective nature, makes him an excellent watchdog. He is also the most popular of the three Schnauzer breeds, which include the Giant and the Standard.