Hill's Prescription Diet d/d Food Sensitivities Dry Dog FoodHill's Prescription Diet d d Food Sensitivities Dry Dog Food There can be a variety of reasons for your dog's scratchy skin condition, including sensitivities to food. The good news is, most pets with these skin conditions can benefit simply by eating the right food. Hill's nutritionists & veterinarians developed Hill's Prescription Diet d d clinical nutrition especially formulated to support your dog's skin and food sensitivities. In fact, d d is