Also consider this; if you ever want to get another rabbit, or you do end up with another rabbit unexpectedly he won’t feel the need to breed/dominate/attack the other rabbit as much. Plus, that needing to breed thing will just go away. I mean, I think it would kind of suck to have the hormones driving me to breed and absolutely no outlet for it. Even if he is well behaved, that is still a part of him. And in addition to all that, getting him fixed will eliminate unexpected swings in personality based on those “need to breed” hormones. So if he does start acting strange you will know that it is for some other reason than being unneutred. I think BB’s Jack is a great example of that! I think it turned out to be a huge bladder stone that caused his crazy, humping behavior towards Vivian. If he had not been neutered it probably would have just been assumed it was just a male rabbit being a male rabbit!