I know this has been talked about many times, but I couldn't quite find an answer. The past couple days Nikko has had diarrhea. Worse today then yesterday. I introduced pork to him on saturday and I have been feeding him half a pork chop once a day. I feed a chicken drum with it so he can get a good amount of bone. I know it takes some time to adjust to the new food, but I thought the bone helped firm it up? Also, last night during the thumb tack scare, I gave him 2 pieces of white bread, could that cause all day diarrhea?

Some popular treats like Greenies, Nylabone Edibles, Milkbones and Everlasting Treat Ball have wheat as a primary ingredient. I made the mistake of getting one of these Treat Balls for Sabaka and I think it did give him diarrhea for a few days. I now avoid all wheat. I would say that the bread could have easily caused the problem. (However, it could be the pork, since that is new too...)

I would suggest stickign to a single protein for at least 2 weeks, then add pork and other meats. Gotta have time to adjust!!

I did stick to chicken for 2 weeks before adding the pork.

Try giving him some pumpkin, that should firm up the stool.