I have enjoyed the company of cats for the past 25 years and they do seem to find our home. There has been a new cat in the yard for the past 6 weeks that I finally figured out is an un neutered male. He approaches the patio door, sniffs noses with my 2 cats, and then hangs out. He will not permit any approach other than up to about 4 feet but accepts and eats cat food when offered. I can't tell if he is any of the type in the subject line. I posted a found ad and asked around the neighborhood but no luck. I want to be cautious with this because last year I took in a one eyed sick looking fellow who was in pretty bad shape. The rescue group advised the humane approach due to the injury and illness and 10 days later someone posted all over the street signs about their missing one eyed, previously injured cat. This guy looks OK so he could be just a wanderer seeking a handout. Any advice or thoughts.