differnt dogs reacts differnt to differnt foods. Purina ONE was the only commercial food that did NOT make shadow throw up, her coat seemed shiney lol after the switch to RAW though her coat used to be extremly dull in comparison purina ONE made Happy very sick, but then again EVERY commercial food made Happy very sick, and shadow could only eat the one. while they both cleared up completly once on RAW, yet shadow brother, Dakota does very well on pedigree healthy vitality, his coat is gleaming gold, he is fit and healthy, shadow though is on it now too, and her arthitus is coming sometimes she is ok, but just a simple pet is starting to hurt her again.(not too bad though, my friend have been sneaking shadow raw meat and bones when her parents are not home) perky however does fine on any diet, she lived on the streets so many times that ANY food is good food to her, and her body has adjusted so that any food will keep her healthy. Ripley can be heathy on any diet but does better on RAW, but its not like kibble would hurt him, like it hurts happy. Blair and misty I have no clue though because they started RAW the day they came home.