Swiss farmers once called this breed the poor man's horse, because a single Greater Swiss Mountain Dog could pull a milk cart, drive cattle to market and watch the farmyard. The largest of the four Swiss mountain breeds nearly vanished as machines replaced draft dogs, until enthusiasts revived it in the early 1900s. Swissies are heavy-boned and powerful, often weighing well over 100 pounds, with a dense black coat marked in rust and white.
Many Swissies are confident, faithful and gentle with their families, and alert enough to bark at anything unusual. They mature slowly, can be strong-willed and pull hard on the leash, so early training is essential. Their size brings real costs and health risks, including bloat and splenic torsion, along with a shorter lifespan than smaller dogs. Adopters with space, time and a taste for steady outdoor activity often find them devoted companions.