I don't think its an allergy QnC...I've had cats that had food allergies before and he didn't react that way. The dumb thing (I say that with love of course :roll: ) has been bulimic his entire life....I was thinking it was a tooth problem, but would see him eat the hard food occasionally when I was feeding him the canned. Tell you the truth...I think he just finally outsmarted me and got me "trained" right. Really I don't know, but whatever is working...I'm gonna stick to it.