The Entlebucher Sennenhund or Entlebucher Mountain Dog is the smallest of the four Sennenhunds, a dog type that includes four regional breeds. The name Sennenhund refers to people called Senn, herders in the Swiss Alps. Entlebuch is a municipality in the canton of Lucerne in Switzerland. The breed is also known in English as the Entelbuch Mountain Dog, Entelbucher Cattle Dog, and similar combinations.
Inbreeding due to the small foundation stock numbers has led to Entlebuchers suffering from congenital defects, the most common of which is Hip dysplasia (canine). Hemolytic anemia also is known to occur. Progressive Retinal Atrophy (PRA) is also present in the breed. The National Entlebucher Mountain Dog Association (NEMDA), in collaboration with other organizations, is working to eliminate these issues from the breed through responsible breeding, genetic testing, and fact dissemination.