Get results you can see when you serve your senior dog Purina ONE Plus Vibrant Maturity Adult 7 Formula dry dog food. We craft this dry senior dog food with MCT-rich vegetable oil to nourish and promote mental sharpness, and it showed an increased average activity level over 20 percent. Chicken is the number 1 ingredient, helping create a high protein dog food that maintains his strong muscles, including a healthy heart. Four antioxidant sources in this Purina ONE dog food support a strong immune system, and natural sources of glucosamine for dogs help support his joints. Our premium dog food recipe supplies 100 percent complete and balanced nutrition for adult dogs, plus this highly digestible Purina ONE senior dog food is made with 0 percent fillers, so every ingredient has a purpose. Watch your pal thrill over the combination of protein-rich, meaty morsels and crunchy dog food kibble full of the taste and texture he loves, and know he's getting a wholesome recipe with no artificial flavors or preservatives.,Purina ONE is produced in U.S. facilities where we take steps to make it good for your dog and good for the environment, like reducing water and using renewable electricity. When your dog has finished enjoying this food, please check your label for recycling guidance.