Well because its sold for the industry its levels are supposed to be guaranteed when leaving the factory, where as just working dog does not. Ive found it fine and not likely to give a lot of shit, but then we feed mostly beef raw, and add our own things like brewers yeast, codliver oil, eggs, dried garlic etc. Ive fed eukanuba to pups and I know its good, but I dont think you can beat beef really.