I have four baby rabbits, born just over 6 months ago. Two I know for sure are girls and one is for sure a boy. The fourth, Pink, I'd thought was a boy, but he's always been so much smaller than the one I know for sure is a boy, he's about the size of the two girls. He won't let me flip him upside down, so I lifted him in the air and felt for testicles....I didn't really feel anything, but he kept kicking me and his nails hurt a lot. The one I know for sure IS a boy, his testicles are big enough to be seen without having to grope him. How do I determine if Pink is a boy or a girl? He won't sit still long enough to get a good look.