Neutering is always a good idea for the overall health of a male canine. Bear in mind, though, that keeping the dogs separated is a temporary solution, at best. The aggressive behavior won’t fix itself without commitment and work on your part. Real balance in your “pack” can’t be achieved until you’ve established yourself as the leader, gained the trust of every dog in the household to control the situation, and properly rehabilitated the dog aggressive behavior. If you’ve never checked out Cesar Millan (“The Dog Whisperer” on the National Geographic Channel) before, now is the time to do so. He’s a genius when it comes to understanding the psychology of a dog, which is so vastly different than that of a human.
Good luck with your boys, Gemini!
Pit bulls ROCK! 🙂