Question: what ingredients are harmful to cats?
Answer: Alcohol. As little as a tablespoon of alcohol can lead to problems for your cat. ... 
Chocolate. Chocolate contains theobromine. ... 
Coffee, tea and energy drinks. ... 
Cheese and milk. ... 
Fat trimmings, raw meat, raw eggs and raw fish. ... 
Grapes and raisins. ... 
Onions and garlic. ... 
Xylitol.