Well, my mom and my brother took him to the vet just now to see if there's anything more we can do. He was lying outside all day in the sun and he doesn't move much due to his arthritis. I'm hoping this is just something that can be helped. I wanted him to at least live to see the summer since that's his favorite. If you can, send him some good hope and pray. I really want him to pull through because I'm not sure I can.
