Cats should not eat Xylitol, even if it’s not as dangerous as it is for dogs. Xylitol is a naturally occurring alcohol sugar found in many fruits and vegetables and is used as a sweetener in a lot of sugar-free foods, chewing gum, mints, candy, and some baked foods.
In cats, Xylitol intoxication has not been reported, but if I’d have to guess, consumed too much, the sugar alcohol can get fermented by gut bacteria and lead to gas, bloating, and diarrhea. But depending on your cat’s health and even body weight, it could also lead to intoxication and possible liver failure from the rise of insulin levels in the blood and the result of hypoglycemia, especially if your cat is diabetic. Ingesting more than 0.5g of Xylitol per kg of body weight highly increases the risk of developing liver toxicity in cats.