CHAPIN Greater Swiss Mountain Dogs. We are locating in South Carolina. We are very dedicated to the Greater Swiss Mountain Dog Breed and will only have puppies with the country's top breeders for the healthiest highest quality pups with excellent traits. Our dogs are very much part of my family and could not imagine life without them. They live to be part of a family unit and love their family .. AKC proudly supports dedicated and responsible breeders. We encourage all prospective puppy owners to do their research and be prepared with questions to ask the breeder. Make sure you are not only choosing the right breed for you, but also that you’re getting it from the right individual.