when i was a little girl, it was always referred to as a "kitty", so this is what i usually still call it....which is kinda odd actually, cause my RL nick is Kitty as well (and has been since i was 2 yrs old), lol! this is why, when i was in high school, my mother used to threaten my boyfriends and tell them they weren't allowed to call me by my nick, lol!