Random thoughts on types of cat food.

That is a very good question, and honestly, I have no idea. It is a pretty good bet that most if not all the corn in pet foods is GMO corn. It certainly can't help. And, most of the "prescription diets" are corn based as well. Depends on the vet and the brand. I am a fan of at least slightly higher protein than some of the cheaper cat foods, but again, if that protein come from processed corn, (which is where allot of it comes from in cheap cat food), that is not apples to apples.