A couple of other things to add.....Sammy was neutered within the last 30-45 days. He has NO microchip (he will soon)! In Texas, all cats that get neutered must have an HIV test and a rabies shot, so that is covered! He popped the screen on the feed shed window and was at the backdoor with the girls this morning ready to eat! He looks so bad, but seems to feel good! I'm thinking because he was recently neutered, he probably was always an outside cat!!