THANK YOU!! People have been saying that all over this site, but Nutro is definitely not made or purchased by Purina to the best of my knowledge and according to both of their websites. The reason they changed their Nutro Max packaging was because it looked "out-dated" and they reformulated their ingredients. I know their cat food ingredients got a little better
On another note, Nutro does have a 100% guarantee, you just have to call the number on the bag, not the store you got it from. Of course, if your dogs aren't having a problem with it and you are satisfied, they may be more reluctant to work with you, especially if you don't have a receipt.