I agree with the Duchess. I'd like to know the criteria used. Also, I checked the AAFCO website very quickly. From that quick look, it doesn't appear to go into the sources of protein, for example. If a dog cannot digest a specific food, the protein in it will not benefit the dog. I have heard this is one of the problems with dog foods: They meet the % requirements, but with cheap sources the dog cannot use. (I think corn is one of those the dog doesn't digest.)
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