My husband and I are torn on if we should neuter our dog or not. At first I was fine with not doing it because he's never outside alone or anywhere that he could get to a female in heat. Also he has had no dog aggresstion what so ever. Well today we took him to the dog park because there were only three other dogs there and we wanted to let him play. One dog was a small male mastiff that was very shy. Pretty much as soon as we walked in we noticed that our dog's fur was standing up, his nose was running, and his mouth was foamy. Then he started growling and chasing the mastiff off. He wasn't trying to hurt him (if he wanted to he could have). He was just running into him and running him off. As soon as that happend we grabbed him, apologized to the owner, and left the park. My dog has never done anything like that and it really bothers me that he did it. So now I think we need to just call the vet tomorrow and get him neutered. But my husband still doesn't think we should because it isnt 100% that it will hlep. So I thought I would ask people that know a little more about it than I do.
So is there enough of a chance that neutering with stop him from becoming male aggressive to do it?