Hill's™ Prescription Diet™ j/d Reduced Calorie Dog Dry Food with ChickenImproving your dog's mobility can be as easy as feeding the right nutrition early on and consistently. Hill's Prescription Diet j d Reduced Calorie helps your dog walk, run and jump more easily. Hill's Prescription Diet j d Reduced Calorie Dry Dog Food is a complete and balanced food that provides all the nutrition your dog needs and helps to avoid weight gain. Recommended for Joint Care. Key Benefits Helps maintain joint cartilage Helps maintain lean