<<Disclaimer: Verify this information before applying it to your situation.>> Since cats are obligate carnivores, it does not surprise me that some of them are apparently unable to handle gluten in their diet. Dogs can survive on a vegetarian diet, cats cant. Mice, fish, and birds do not contain much gluten :-) A study has been done that shows cats do best on an all-mice diet, but so far the pet food manufacturers have been unwilling to cooperate. Ruth Mays Cinnaminson NJ [log in to unmask]