oh well, that's a black cat I love too. First read cat lost and thought it's gone forever, but there's still hope to get it back. Even cats who are normally at home can stray away some day. Barring accident they will find back home in most cases. I have missed one of my cats for eight weeks over the summer in 2008 and she came back with heavy damage to the head, so I rushed to vet hospital and the doctors saved her life. From this day on, I put a net in front of my balcony so she cannot stray away again. Yes she's still living ten years after the whole adventure, living at my home as granny cat now. I wish you well, don't give up searching for your blacky.