Tricky to understand and make sense of, huh? You should be seriously concerned about dog food that includes meats from supermarkets discarded after the "sell by" date, parts of sick, diseased animals possibly treated with high doses of antibiotics and other medications or carcasses of animals that died under various circumstances prior to slaughter. All these have one thing in common: they are usually not stored, handled and preserved from rotting and decay with the same care as more valuable meats. Not a recipe for good health is it? Generically named meats on dog food labels generally come from questionable sources. If a manufacturer uses specific types of meats, they will gladly feature that on their pet food label as "chicken meat", "beef liver" and so on instead of using more cryptic generic terms. There are obvious reasons for these concealing specific names, again pay very close atten...