Didn't they only bring kitten food out only a few years ago and it's virtually idental to adult food only slightly higher in protien/energy because they're growing? And maybe smaller kibbles for small mouths? I got the definate impression (can't remember where from) that kitten food is largely a silly gimmick used to market more cat food. People must've been feeding their cats something before the pet food companies started marketting kitten food and we don't have generations and generations of dead cats.