You know, when we got the cats, we were told that they were one boy and one girl, and we didn't really think twice about it. Well, today I was petting the boy kitty Marty, and noticed bumps that seemed suspiciously nipple-like in nature, and flipped him her over, and finally took a good look, and yup, we have two girl cats.

Wonder how long it's going to take me to stop calling Marty little boy. :)