At the beginning of the month, my father and I picked out a pair of kittens of mixed breed. At the time we and the people who had them thought the yellow and white one was female. Well three weeks later it turns out Toph was a late bloomer and is actually a boy.
To be fair, this was a hard kitten to sex until the past week. A large growth spurt has revealed all beyond a shadow of a doubt. It helps that he has developed into a lap cat and can finally be examined without it being considered a call to wrestle.