It wasn't one of the top dog foods Purina produces probably. It was Dog Chow. He's 13 years old and I've been feeding it to him since he was 2. Again, I just can't understand why the red dye was added when it's been proven that some dogs are allergic to it? I didn't call Customer Service. I figured they wouldn't change the formula back because of me, so I switched dog foods. Problem solved. Albeit now it's more expensive to feed my dogs!