The Appenzell Mountain Dog, called the Appenzeller Sennenhund in Switzerland, is the most energetic of the four tricolor Swiss mountain breeds. It comes from northeastern Switzerland, where it drove cattle, guarded farms and sometimes pulled carts. Medium-sized and muscular at roughly 48 to 70 pounds, it has a short, dense double coat in black or brown with white and rust markings, and a tail that curls over its back.
Appenzellers tend to be lively, watchful and devoted to their people, and are often reserved with strangers. Bred to work all day, they usually need steady exercise, training and a real job to do. In Phoenix, that means planning activity around the heat and finding ways to keep a smart dog busy indoors. Dogs vary, so a dog's own personality matters more than the breed label.