HSD Adult Cat Light 4lbsHill's Science Diet Adult Cat Light 4lbs Whether your cat has a noticeable weight issue, or you would just like to keep your feline friend at a healthy weight, Hill's Science Diet Light Adult dry cat food is precise nutrition for less active adult cats requiring a low calorie food. This cat food made with natural ingredients provides 20% fewer calories vs. Hill's Science Diet Adult, along with L Carnitine to help support an ideal body weight in your