Purina - Pro Plan - All Size Adult Sensitive Skin & Stomach OptiRestore Dry Dog Food - Salmon & Tuna - 12KGOverview Just like humans, some dogs are born more sensitive than others. When food intolerances do occur, the immune system reacts abnormally to normally harmless ingredients, such as chicken, beef, soy, corn and wheat. When digested, they cause the immune system to react. Signs of an intolerance or sensitivity can include vomiting, diarrhoea, paw chewing and skin rashes. PRO PLAN Sensitive Skin and Stomach formula is scientifically developed to help