Hills Prescription Diet Dog Food Dry w/d w/d 3kg Some dogs are naturally prone to weight gain. Even a small amount of weight gain can reduce the time pets and their families play together, and can decrease their quality of life due to increased stress on joints, etc. For such pets, Hills nutritionists and veterinarians have developed the special therapeutic food Prescription Diet Dog Food w/d w/d Small Bite, which addresses digestion, diabetes, and weight management. This product is formulated with low fat, low calories, and high dietary fiber, taking into consideration weight management and conditions requiring fiber, and is a scientifically proven food to address fiber-responsive diseases.