Natural cartilage means healthy joints and a happy dog. Something the competition just canât offer. What makes ACTIVE CAREÂ® Lamb Meal & Brown Rice different is natural cartilage and our patented method of obtaining it. Many dog foods have taken an easy leap onto the healthy joint bandwagon by adding varying amounts of synthetic forms of chondroitin and glucosamine then claiming to promote good joint health. Natural chicken cartilage provides the all-important GAGs in an all natural stable form so there are no chemical side effects. With natural cartilage, ACTIVE CAREÂ® is specifically created to maintain good joint health.