Since we brought Dakota home he has loose stools. In his previous foster home he was on Purina one I bought I 5lb bag and mixed it with what I feed Wellness White fish and Sweet Potato. His stools have been soft for the week he had been here. In the mornings they are little more formed but still soft. Could it be the food anyone have any suggestions on, a food I may try on him. I know others mentioned certain foods caused loose stools for thier dogs. Any advise would be great.