my male ferret was nutered and desented last week on wed. and I noticed theat my plump little boy was loosing weight very fast, he seemes very happy other wise, and he is now active, something that he wasnt befor the sergery. is this normal? I had him on puppy food befor the sergery, should I change him to a high calorie cat or ferret food? any sugestions would be appereciated. [Posted in FML issue 2576]