The Greater Swiss Mountain Dog (often called Swissy) is the largest and oldest of the four Swiss Sennenhund breeds. Originally used as a draft and drover dog in the Swiss Alps, the Swissy is a muscular, versatile worker with a steady personality and deep loyalty to its family.

Known for its tri-color coat, confident stance, and expressive eyes, this breed is both physically strong and emotionally gentle. They’re excellent with children, patient, and protective — without being aggressive.

They need room to move, a job to do, and steady leadership. Though large, Swissies are not high-energy and prefer moderate activity with plenty of companionship. Left alone too long, they may become anxious or destructive.

• Origin: Switzerland

• Breed Group: Working

• Lifespan: 8–11 years

• Size: 23–29 inches tall, 85–140 pounds

• Coat Type: Short, dense double coat

• Temperament: Loyal, calm, watchful, gentle

• Exercise Needs: Moderate – daily walks and purposeful play

• Training Needs: Willing learner – needs consistency and patience

• Grooming Needs: Low to moderate – sheds seasonally

• Health: Prone to bloat, hip dysplasia, elbow dysplasia, OCD

Greater Swiss Mountain Dogs are gentle giants — dependable, steady, and loving. They thrive in homes where they can participate in daily life, especially with families who appreciate their watchdog instincts and calm companionship.

They do best in cooler climates and homes with access to space. Swissies aren’t hyper or clingy, but they dislike being isolated and require regular engagement and structure. They bark to alert but are not excessive or reactive by nature.

While they’re not as common as other large breeds, those who meet a Swissy often fall in love with their noble presence and affectionate, grounded personality.