I've been feeding three feral cats for a few years. Just buried one of them recently because of being hit with a car. So now I have two. It wasn't to long after I buried that one, that another cat showed up. Its been around for I would say over a month. Now within the last two weeks, I would say since March 12th 2017 my two that I was feeding for years went missing. What could of happened? Did this new cat run them off. I would really think since they have been coming for years they would at least try to come and eat. I am really hurt about this. Not sure what to think. I could use any advice. Thanks