I've had Mei on California Natural for over a year now with no problems, unless someone slips her human food. I recently moved home for the summer and since then...she's been having mushy poops. I usually know the cause of it, but this time I'm not 100% sure. My parents keep telling me that they aren't feeding her human food and I feel bad if I'm constantly accusing them. Another thing that makes me wonder is that I've recently changed up the flavoring from chicken to lamb. I didn't think about gradually easing her into the lamb since they were both from California Natural. Could that be the problem?