Nulo Freestyle Grain-Free Trout and Sweet Potato with Glucosomine Senior Dry Dog Food is a large bag of senior dog nutrition focused on supporting mobility, weight management, and overall vitality. This formula features trout as a flavorful, easy-to-digest protein along with salmon and turkey meals to provide joint-supporting nutrients like omega-3s and glucosamine. It includes sweet potato, blueberries, and tomato as sources of antioxidants and fiber, helping boost the immune system and regulate digestion for older dogs. With fewer calories than adult formulas and added L-carnitine, it helps senior dogs avoid unhealthy weight gain, and the inclusion of BC30 probiotics ensures they absorb nutrients efficiently and maintain a healthy gut. Available in Multiple Sizes