Answer: Fortunately, true allergic responses to foods are uncommon in cats, though it seems that the some cats are allergic to the proteins in cow’s milk. Many reactions to foods are caused not by an inability to digest or absorb a particular food, so that in large amounts the food produced diarrhea or sickness. However, in the case of true allergic even small amount of the particular food will be sufficient to trigger the allergy, provided that a minimum of ten days has elapsed from the time that type of food was first consumed by the cat This is necessary for the cat’s body to produce sufficient antibody to give a reaction, At other times the apparent food allergy is in fact a reaction to some disease producing organism or to drug.
Discovering the food responsible for the allergic reaction involves feeding a variety of different meal and noting the response. This can be a tedious process but when the causal foodstuff is absent an improvement is usually noted within three to five days.
