I had a disabled chicken that lived with us in our house for 7 years as a member of our family. She passes this winter in my arms-loved. I understand your pain, and I suggest trying to syringe feed him if you can get help. If one person can lovingly hold him and keep him calm, the other can syringe feed a mash mixture. I really like "nutri-drench" also for extra vitamin intake. Also carefully look him over for any signs of external injuries. I know you said the cat didn't hurt him, but it can't hurt to look to be on the safe side. I hope he gets better. Good luck and take care.