I had a dog that wouldn't eat its dry food anymore. A vet suggested that I try microwaving the food for a couple seconds and then give it to her. I tried that and she ate it for a while. Then she stopped again. Then I tried to switch her to canned food and she loved it. One BIG lesson I learned doing that was: if you are switching foods for your dog, do it gradually or your dog will be crappin all over the place like mine did. Now I have an english pointer pup and he eats nothing but dry food.