The things that Irish Wolfhounds cannot eat are as follows: onions, green onions, raw eggs, cat food, chocolate, grapes, avocados, fruit cores, foods high in sugar, salt, and oil, and foods containing caffeine. , fishy and spicy food. Once the Irish Wolfhound accidentally eats the above foods, it may cause physical discomfort and food poisoning in mild cases, and may cause vomiting or even death in severe cases.