The Bernese Mountain Dog is a large, lovable working breed that makes a wonderful family companion. However, the breed has certain characteristics prospective owners need to know about to make an informed decision. If you are thinking about owning this breed, you will want information about their short life span, the significant hereditary problems found in berners (such as hip and elbow dysplasia), and their tragic predisposition to cancer. Don't make an impulse buy-- be informed.