It wouldn't be the first time for Purina. They got caught feeding bovine meat and bone meal in cattle feed, a couple of years ago, in West Texas the presumed source prions that cause chronic wasting disease. In the 1970's they experimented with using styrofoam as a filler in dog chow, discontinued after public complained that it looked like it snowed in the backyard after a couple of weeks of feeding, but did no harm to the dog. Right in there with the tainted wheat gluten/melamine from China, poisoning a couple of years ago. As said they are all in it to make a huge profit by delivering the cheapest product they can sell for the most $. look at the ingredient list, first item in the premiums, is some kind of meat, chicken usually, followed closely by a laundry list of grains, listed frequently as corn, corn gluten meal, feeding oats, wheat gluten meal, these foods are advertised as " first ingredient real meat protien", but primarily cereal grains or cereal by products. If as they imply the "primary ingredient were a meat base, the protien would be more like 50-60% rather than 21-30%. Same for the lamb and rice scam, the duck and potato scam, it's all marketing, more money goes into the branding than goes in the bag! If you feed a commercial dry ration, virtually any American Feed Council approved food is as good as another, although I would avoid soy meal protien except as a snack, like milkbone, because of the potential allergies and digestive upset. If you don't believe me here are some numbers, I used to sell this stuff, a premium bag of dog food, which I will not name,but a 30-20, blend, sold retail in a 40# bag,( now 37.5#) for $44.00, as the retailer we bought that bag for $28.00, and if you were a member of the manufacturers club, you got about $6.00 as a reward. So $22.00 was discounted, and they still made about $8.00 per bag. What went in the bag? About $14.00 dollars. Some manufacturers don't play that game and sell for about $25.00 a bag, but the ingredients are essentially the same, with no marketing budget, and sometimes come off the same line at the same plant!