We have three cats who are happy together and the input I received on this forum helped to achieve that goal. Anyway---a stray tomcat showed up some time ago and our cats gave him a wide berth. We started feeding him on the deck because we felt sorry for him. Time passed and I put FrontLine Plus on him because he was covered with fleas and ticks. He went off his feed, became sick and started vomiting worms. Expensive vet visit, deworming, screened for leukemia and aids negative. So once he was stable, about 2 weeks later, grabbed him up and took him for neutering and his vaccinations. This was last Thursday. It was hot. Left him crated until the anesthesia started to wear off. Then we fed him and he ate both wet and dry food, drank water, etc. I saw him crawling beneath one of the free standing storage sheds, not uncommon behavior, to cool off. Tomorrow will be a week since he has been missing, just disappeared. We feel sick. We should have done this, should have done that. Our own three cats have the house and the barn. We made Tom a shelter on the covered side deck, with water, food dishes and a condo. Does anyone have any thoughts about what could have happened????