13. Australian Shepherd
The Australian Shepherd, celebrated for its intelligence and diligent work ethic, often enjoys a lifespan of up to 15 years. These agile dogs thrive on mental and physical challenges, which keeps them in excellent health. Their innate desire to work and their energetic nature require regular exercise and engagement. By maintaining an active lifestyle and ensuring proper veterinary care, Australian Shepherds remain robust and healthy, providing years of loyal companionship to their families.