So I have had my first cat for 4 years, he is a flame point, cross eyed and very anxious because he was abused by my ex husband. He cut off his whiskers and threw him around and had choked him which was the final straw in which ended our marriage. But since then he has been treated very well, I will not let anyone hurt my baby. It's been 3.5 years since I kicked the ex out and my kitty is better around other people and has always been curious about other kitties. I mave moved several times and there has been another kitty in the house and he is usually very calm. We recently adopted a new kitten that was hanging around my parents house we got him a check up and he's healthy so we brought him into our home. for the first two weeks we kept them seperate and then let them eat next to each other through a door. Then we let them out and they get along fine usually they even sleep touching. Well the kitten got out this morning and we couldn't find him until this afternoon and so we were so happy that he is okay and that we could get him out of the cold but now my first cat is back to hissing at him again and being anxious. What do I do to make both kitties feel safe in the home?