Hello, I am new to this site. My horse I had for about 3 months has lost weight and won''t gain it back. He has yellowish eyes and little yellow in his gums. Some days they look better and other do not. The vet did a check on him and he does not have a liver problem. He is still doing the normal stuff eating, pooping, peeing, no abnormal vital signs. I was wondering why he still has that yellow? I wonder if there is something that is causing him to lose weight and not gain. I have givien him mineral blocks, grain with oil in it, plenty of hay and a supplement to help a horse gain weight. Any ideas or suggestions are much appreciated.