Rufus is less doggy smelling than he was before castration. Not sure if this is due to the change in coat, the fact that pinky winky is never out now or what. He only became gobby about a year ago, after a lab tried to perform an unnatural act on him, which I suppose was because of the castration. The usual odour nowadays is more about where he has been and what he has been doing than his testosterone or lack of it.