The Entlebucher Sennenhund is the smallest of four Switz mountain dogs, the others being the Appenzeller Sennenhund, the Bernese Mountain Dog, and the Greater Swiss Mountain Dog. During the 1800s these dogs were variable and were not regarded as distinct breeds. In 1908 the Switz Kennel Club set about classifying them.[1] In 1913, four bobtail Entlebucher Sennenhund were shown to Albert Heim, an advocate for the increasingly rare Sennenhund breeds. The breed was entered into the Swiss Kennel Club stud book, but World War I intervened, and at first after the war no examples of the breed could be found.[2] The first breed club was not formed until 1926, 16 dogs of the type were found in 1927, and the breed slowly was restored.[3] Although originally kept for guarding and herding, today the breed is usually kept as a lively companion.