Please do get him neutered it will help with the aggresive behavior. I had Merlin done when he was 2 and a half. He is still just as active as before but, he doesn't act like he's the killer of the world any more(unless your the UPS driver). It will help deterr some cancers. It also will keep him from romaing around (if he was a runner). If the cosmetic look bothers you they now have falses they can implant ,for the uncut look. (sorry everyone but they do some guy is making lots selling them to vets for implanting. Some people just are into that Macho look. Corinna