Welcome One of These Healthiest Dog Breeds to Your Family

2. Australian cattle dog

As its name suggests, the Australian cattle dog was once bred to herd livestock. First known as the Australian heeler, some people still call them blue heelers or Queensland heelers. Bluey, a 29-year-old Australian cattle dog, is listed in the Guinness Book of World Records for being the oldest dog. Since these dogs are naturally active, they benefit from exercise. This breed is also a small to medium-sized dog, which helps prevent the breakdown of cartilage. Bred for problem-solving and intelligence, not looks, these cattle dogs live 12-16 years on average. The key is to keep these dogs active — they are not couch potatoes.