Sorry if this is common knowledge of rabbit behavior or answered anywhere else in this forum. However, I just rescued a new holland lop from the pet store and he seems to be very young. I just introduced him briefly to my mature show bunny which has never been mated before. He instantly started humping her within a few minutes. I did not know he was a male until now. Is this normal? He seems much smaller than her. She did not seem to mind however, I split them up asap. Being I don't know his actual age does this necessarily mean he is fertile? Please forgive me but I am new to raising rabbits.