The Greater Swiss Mountain Dog (German: Grosser Schweizer Sennenhund or French: Grand Bouvier Suisse) is a dog breed which was developed in the Swiss Alps. The name Sennenhund refers to people called Senn or Senner, dairymen and herders in the Swiss Alps. The under coat is thick and ranges from the preferred dark gray to light gray to tawny, and must be on the neck, but can be all over the body – with such a thick coat, Sennenhunde shed throughout the year and they have a major shedding once or twice a year. :5.