My Dog had not been eating and we didn't know why but i finally put water in his food because it would make it softer and he is eating now but he isn't gaining wait and he's pretty skinney and about a couple times a month his stomach will get huge and filled up with gas and he can hardly move and he has got x-rays and everything but they can't find the problem and we need to know what's wrong, also he passes gas a lot.
Your pet should be examined by a vet. This could be as simple as gum disease or a more serious problem. A blood test and full exam is warranted. vetcrae