I have a wennie dog who just turned 1 in December. The problems is that he is not gaining weight. We have wormed him and leave feed out for him at all times. You can see his spinal cord and all his ribs. I don't know of anything else I can do. Can someone please offer some suggestions. It makes me so sad to see him even though he is a vey happy dog. He is my baby and I want him to be healthy.