Designed for dogs 9 + years and over 50 pounds, Iams Senior Plus Large Breed Dog Food contains antioxidants to help keep the immune system of your older dog at healthy adult levels. It is formulated to nourish healthy bones and joints. Protein from chicken and egg builds strong, firm muscles. Helps older dogs maintain a healthy weight. Omega 6 and Omega 3 contribute to healthy skin and shiny coat. It is 100% complete and balanced nutrition that is 100% satisfaction guaranteed.