none of might fight ,the jills put him in his place if they dont want him ,and as regarding neutering ,if you have him vasectomised then he will still mate with the jill when she comes into season and thus take her out solving any problems what could occur with her being in season along time plus saves you money and time having to take her to the vets to have her jill jabbed and you wont have unwanted kits to find homes for .if you decide to have him castrated he will loose any urge to want to mate with the jill,then you still have the jill to think about then when she comes into season unless