Cats should not eat spicy food because their fragile gastrointestinal tract cannot digest spicy and irritating food. Cats who eat chili peppers will suffer from gastrointestinal disorders, leading to diarrhea and severe gastroenteritis. Eating a large amount of chili peppers It will cause the cat to lose its sense of taste. When raising cats, be sure to avoid letting them eat spicy foods such as peppers, onions, and garlic.