and droving-cattle dogs. Heim was a Sennenhund expert, and started to encourage breeders to take an interest in them. These efforts resulted in the re-establishment of the breed. In 1909, the dogs were recognized as a separate breed by the Swiss Kennel Club and entered as "Grosser Schweizer Sennenhund" in Volume 12 of the Swiss stud book. The first breed club was formed in 1912 to promote the Greater Swiss Mountain Dog. The Bernese Mountain Dog and the Greater Swiss Mountain Dog are two of four distinctive farm-type dogs of Swiss origin who were saved from extinction and revitalized by Schertenlieb in the late 1800s. References External links 1849 births 1937 deaths 19th-century Swiss geologists Academic staff of ETH Zurich Wollaston Medal winners Members of the Royal Swedish Academy of Sciences Foreign Members of the Royal Society Foreign associates of the National Academy of Sciences Honorary Members of the Russian Academy of Sciences (1917–1925) 20th-century Swiss geologists