I'm not going to glorify it by calling it a theory, but I think that, among cat owners, almost everyone gets an animal of the opposite gender. I decided to get my girl because she was the one who was most responsive when I visited the SPCA, but I was really hoping to get a male cat I could name Gib. I'm cruel like that. so I'm curious. Do your friends have cats of opposite genders, or is that just me?