I don't have cats (I would love to have one, but Copper would object), but I have heard that some of them are notorious picky eaters. I think it's a control thing *hee*, I can their little kitty brains wondering how many different foods they can get mom to buy.

Because, you know no animal is going to intentionally starve themselves when there is good food to eat. It's willful disobedience. Dissident kitties!