The Canadian Kennel Club recognized the breed in 2006, and also places the breed in the Working Group. The United Kennel Club recognized the breed in 1992; they place the breed in the Guardian Dog Group. The Kennel Club, based in the United Kingdom, classifies the Greater Swiss Mountain Dog in the Working Group. The Continental Kennel Club (CKC) lists the Greater Swiss Mountain Dog and provides minimal information about the breed. The America's Pet Registry Inc. (APRI) does have a classified ad section for Greater Swiss Mountain Dogs. The American Canine Registry (ACR) lists the Greater Swiss Mountain Dog as an acceptable breed under their American Canine Registry section. As of May 2010 the breed is not recognised by the New Zealand Kennel Club or the Australian National Kennel Council. Four breeds of Sennenhund The Greater Swiss Mountain Dog is considered the oldest of the Swiss breeds. It is the largest of the four Sennenhund breeds; all four have the same colors and markings, but are different sizes. Evolutionary hierarchy suggests breeds should genetically cluster into groups sharing recent common ancestry. A genetic clustering algorithm could not easily distinguish between the obviously related pairs of Greater Swiss Mountain Dog and the Bernese Mountain Dog. The four breeds of Sennenhund, with the original breed name followed by the most popular English version of the breed name: Grosser Schweizer Sennenhund, Greater Swiss Mountain Dog Berner Sennenhund, Bernese Mountain Dog Appenzeller Sennenhund, Appenzeller Mountain Dog Entlebucher Sennenhund, Entlebucher Mountain Dog Similar breeds In addition to the three breeds mentioned in the previous section, Greater Swiss Mountain Dogs are related to other mountain dogs: Boxers, Bullmastiffs, Doberman Pinschers, Great Danes, Great Pyrenees, Komondors, Kuvaszes and mastiffs. The breed probably contributed to the development of the St. Bernard and the Rottweiler. See also Dogs portal List of dog breeds Carting References External links Historical photos of the Grosser Schweizer Sennenhund from the Bern Naturaidogsarebad History Museum More information about geologist and indigenous Swiss dog breeds advocate Albert Heim (1849-1937), including a photo with Swiss Mountain Dogs in 1929 (in German) Dog breeds originating in Switzerland FCI breeds Livestock guardian dogs