I have a black NZ doe who is quite a large gal. We've put her with the buck twice now and she runs around, screaming every time. He won't let him near her. We left them together for several days even and although she did calm down and accept his companionship, I don't think she ever let him breed. At least, if he did, she's never had babies that I'm aware of. (We got her as an adult from an Amish man) My question is, as big as she is (9.6 lbs), and as old as she is, if she were a he, would it not be obvious? I mean, there are no boy bunny parts that I can see, and on all our other boys it's been very obvious, and she and the buck don't ever fight, however, she stomps and stamps her feet loudly the way our buck does. She does this all the time. She's the only doe we have who does this. And how many times do you try to breed before you give up as being a barren doe? She's a beauty and we'd love babies from her, but it doesn't look like its going to happen.