[Mick Trainer]

Neutering can indeed be flipping a coin (many others will not agree) but in this case I would think it would definatly be worth a try especially if the other dog is staying entire. The difference in the way the view each other could be seriously altered by neutering him. As too how it will effect his behavior towards you chances are it will not make much difference. Behavior Modification Training will make the difference here.

Mick.