Recently our vet had us switch Mosley off of puppy food and onto adult food, due to the fact that he was growing too fast, he was at 60 pounds when he was 9 months old. So when we switched he became a "grazer" where before he would get excited about food. For the past 2 weeks or so he started not really eating and leaving a lot of food in his bowl at his feeding time. We feed him 3 times a day. We assumed he didn't like his food, so we got him a new flavor. We are now feeding him Natural Balance Bison & Sweet Potato, before it was Duck & Potato. The first day he chowed and it seemed like he loved it. Yesterday he ate both his breakfast and lunch, and picked at dinner. Today he didn't eat his breakfast and the only way he would eat his lunch was if we put it in our hands to feed him. We feed him out of a stainless steel bowl, which is big enough to fit his head in. We are at a loss! Any suggestions?