How Long Do Working Dogs Live?
How Long Do Working Dogs Live? The average lifespan for large dog breeds is 8 to 12 years. This includes large breed dogs such as German Shepherds, Golden Retrievers, Labrador Retrievers, Rottweilers, and Doberman Pinschers, as well as giant breeds such as Great Danes, St. Bernards, and Mastiffs. Do any dogs live to 20 years?