I understand the whole concept of a dog being fed crap it's whole life, but if a dog is showing health by healthy skin, coat and teeth, wouldn't that indicate the rest could be healthy too? I'm not defending crap food at all, like I said it would never ever occur to me to fed it, but I find that so many dogs are fed these types of food and do well on it and led long, happy lives. I just don't understand it and sometimes find myself debating leaving a foster dog on it until they are adopted out and a change of food for the better is done. My old guy Peluche just turned 15 and is peppy as all hell. He runs around like a little maniac and can jump clear over the big guys like an agility star. His owners fed him crap food his whole life, I got him at 14, and is super healthy still. I changed him right away to better food, but still how could a dog be in such great shape on crappy food?