He's not doing well. He's been hyperthyroid for a couple of years now but lately he's gotten thin. I give him his medication for it but it doesn't seem to help, he's not putting any weight back on. He spends all of his time underneath the bed and in the living room. He won't lay on his side, but kind of lays on his stomach. It kind of reminds me of what Midnight would do when her kidneys failed. The vet said his heartbeat was irregular and galloping. She said he could have heart disease but she won't know anything for sure until she runs some tests. She's going to do some blood work, x-ray his chest, and give him some fluids. I can't tell if he's eating or not. I've seen him drink some and he has used the litter box. He also hasn't been walking steadily with his back legs. If he tries to go faster than a walk he gets wobbly and falls down. He's been with me for 15 years, it makes me cry to see him like this.