Ok so last night I was sitting in the living room. My one boy Santo was over at the door looking out through the glass (it was night). I saw his reflection in the glass, but didn't think anything of it. So I was walking by and saw another cat outside and it looked very similar to my other boy Ernie.........same coloring, same build and I am sure some of you have had the feeling.........IMMEDIATE panic that your cat was outside. So I yell "Ernie why are you out there." Then here he comes around the corner from eating. So yes, it was another cat just dropping by apparently. But what was odd was the fact I tried to show Ernie there was another cat outside. He walked up, sniffed the door a few times and walked away. Santo was just there watching it and never made a peep. I thought all cats would hiss and growl at strange cats when they saw them? Not mine apparently..........so much for the "watch cats." HAHA!