As our dogs age, their feeding requirements change. They need a little less protein and a little more fat but not as much as they did in their younger, active years. They still need all the good vitamins and minerals. If you older dog is having stiffness problems, we recommend that you supplement a good Glucosimine and Chondroitin product. If they are having health problems that affect their lifestyle please take them to your vet to be diagnosed and treated.