Like humans, some dogs can be prone to weight gain as they become older or less active. Neutered or spayed dogs can also be prone to excessive weight gain due to reduced energy requirements. Older, overweight or less active dogs still need a carefully balanced diet, with high quality ingredients to maintain their health and condition and Field & Trial Light & Senior has been specifically formulated to meet these needs. Wheat gluten free made with easily digestible chicken and rice, it is lower in protein and fat which can help dogs lose excessive weight. It also contains enhanced levels of Glucosamine and Chondroitin to help protect the joints of your dog.