Is it possible??????

-My cat is 8 and she's kinda mean. She scratches , bites and hisses at people quite a bit. Its definately not bad enough to give her up. Any adice on how to make her nicer. Oh and she chases my 17 year old cat.To train my cat I used a spray bottle filled with water. but in this case, you might want to try to let her know that you & your friends aren't going to hurt her. Many people say that cats can't be trained, but its not true. Some people just use wrong methods that cats don't respond to. & others are stubborn and want to do things there way.I have aa kitten who did the same thing but I just held her and got her used to me so now anyone can pick her up. Just make her sit in your lap and pet her. She will try to get away but make her stay.