I find cheap soups on sale, beef/chicken broth, or heat our scraps in some water and the give them a little throughout the day. I wet the food pretty good at night. Another thing is timing as well. Feeding early in the morning will lead to the same thing as the dog will burn daily calories/water and then shiver/burn during the night. In the cold it is better to hydrate in the AM and feed in the PM. Good post. Especially sine I see the rain freezing in the tops of the trees right now. EWO