Hill's Prescription Diet - Dry Dog Food - Canine z/d Food Sensitivities Small Bites - 1.5KGOverview: Food allergy and intolerance are potentially serious problems that can result in sensitive or irritated skin, coat and ear conditions or even gastrointestinal upset. Dogs that have a food allergy or intolerance, also called adverse reactions to food, typically experience an abnormal response to the protein in the food. If your dog suffers from adverse reaction to food, it is even more important to feed the right food. At Hill's,