The name Bernese Mountain Dog is a translation of the German "Berner Sennenhund," which literally means Bernese Alpine Herdsman's Dog. The breed's original name was Durrbachler, after an Inn where these farm dogs were bought and sold. The modern breed was developed from dogs found in the countryside around Bern, Switzerland and is only one of several Swiss breeds.
The original Berner Sennenhund was an all-around farm dog, used to guard the farm, drive the cows to and from their mountain pastures, and pull carts loaded with milk cans to the dairy; modern Berners retain some, although not necessarily all, of these instincts. The breed was rescued from near extinction by Professor Albert Heim around the turn of the century and has developed slowly since then. In 1948 there was a significant outcrossing to a Newfoundland dog, with a resulting improvement in temperament and increase in size.