We switch dog food 2 weeks ago & for the first week I was mixing the old with the new then we ran out of the old and now been feeding her just the new. Problem is she is having lose stools on a regular basis. Question is should I go pick up another bag of the old stuff we were feeding her and keep mixing it in or is this new stuff just to rich for her I know before we got her she was always on some cheap brand or another. We made the switch from Iams to 4health chicken n rice. Granted she loves eating the new food more happily then she like eating the Iams but its not agreeing with her. So not sure if we should continue to ride it out or go pick up a small bag of iams and do it even slower? Thanks all.