I have a 1 1/2 yr old kitty that I have raised from four weeks old. I noticed that when he went to visit his two buddies (other cats) at my friend's house he was very happy having other cat company. This prompted me to think about getting another cat. I went to the shelter and found a kitten 6 months old. It just got neutered and has its shots. I just brought him home and introduced them in my apartment yesterday. There are two concerns that I have. #1...should cats lick themselves right after they get neutered? Is it safe and good for that area? #2...I was not thinking that my kitty, Gerri, would be so dominant in his own apartment. He is hissing and growling at the new kitty and I wonder if he will get better over time?