The Greater Swiss Mountain Dog, one of Switzerland's oldest breeds, traces its roots back to ancient Rome. In 58 BCE, Roman legions introduced mastiffs to the Swiss Alps, which interbred with local dogs to form this distinctive breed1. For centuries, they served as indispensable farmhands in remote Alpine regions, herding livestock, guarding homes, and pulling carts laden with goods14. By the late 19th century, industrialization nearly drove them to extinction until canine expert Dr. Albert Heim rediscovered the breed in 1908. The Swiss Kennel Club officially recognized it in 1910, and the Ame