Spanky boarded last weekend while we were out-of-town. I had measured out his food for each meal and labeled the ziploc bags that I put each meal in for him. My husband dropped him off and forgot to take the food, so he ate their food which is Science Diet. I knew he didn't care for the Sci. Diet prescription weight-reduction food, but that would have to be tasteless, especially with it being weight-reduction. I thought he liked Sci. Diet, okay, though. He has eaten their food before when I've boarded him. About a month ago, I changed him to Taste of the Wild (from the prescription food for weight-loss). He gets a report card from the boarding facility, and they check off how he eats. He usually has 'piggy piggy' checked meaning he eats everything they give him. This time he had 'picky picky' checked off. I would have thought getting to eat a lower quality food would be like a treat to him. I know I would rather, taste-wise, eat junk food than good-for-you food, and I had always thought that it would be the same with dog food... that it would be like getting candy or hamburgers and french fries as opposed to broccoli and spinach, etc. Apparently Spanky likes his TOTW because he's cleaning his plate every meal since he's been home. I would say it could be from being in a new place, but he's very familiar with where he stayed, and he's always eaten well there before.