I am considering the possibility of neutering one of my boxers, possibly both. The one I am considering (Yoda) is still young, 4.5 months. He is excellent around people, both young and old, but around other dogs he has never met before, he usually get's extremely aggressive. I've read that neutering often times helps to prevent such occurences. And although I am not going to breed Yoda, it has been suggested by my vet that I neuter Yoda because he supposedly has a very mild heart murmur; I say supposedly because one vet detected it very early on then said it went away, and another vet is still able to detect it. Anyhow, any comments regarding the outcome, both positive and negative, of putting their dog(s) through the procedure would be much appreciated.