Hah, cute! I'm usually pretty good about not keeping rats that aren't producing, but when I picked up Isis to be a breeding female... only to find out that she was not only a he, but sterile, I still had to keep him. He is the most amazingly docile, social, lovey rat I've ever had - perhaps barring Harley, my first pet rat ever, but I spent so much time with her that she actually bonded with me and would groom me and everything. Both were black berkshires, too.