[Carina43]

Eight months old...any day now! LOL. Between 8-10 months old seems to be the usual time frame for the hormones kicking in and attitude changes.
This has been discussed a number of times, doing a search on "neutering" should bring some of those up. With that said - here's my .02, and bear in mind I'm for waiting, as long as you are responsible, keep the snotty behaviour under control, etc etc.

The behaviour changes you may see are easily dealt with through training...Cooper turned practically overnight into a lunging, roaring idiot at ten months old. I just kept up with classes and made sure he didn't get too big for his britches. Not every male dog will do this, by the way. I'm just lucky I guess. :D (Also, neutering him won't absolutely guarantee he'll never be dog aggressive either.) It was a fair amount of work, but the level of control I have is MUCH greater than had I not had to do the extra work, plus I think he & I gained a better working relationship.

Neutered or not, it's pretty common for young dogs to go through phases where they get snotty attitudes. I say, if one wants a sweet, biddable, placid dog, get a Golden or English Bulldog! I sort of like a bit of spirit, that's one reason I like Rottweilers better than Bulldogs. Though I think Bullies are awfully cute.

You'll need to stay on top of him as far as marking - he might start doing this inside if he's intact. That's a behavioural issue though, and I'm sure there's lots of people here with intact males who are extremely well behaved! You only have to do to a dog show to see whole crowds of intact dogs cheek to jowl, acting like perfect gentlemen. Of course if he gets wind of a bitch in heat, it could make him a bit frustrated/off his food/stupid, but that's temporary, just make sure he can't roam.

Unlike bitches, there is no health benefit to an early neuter with a male...the jury seems to be out on how much it affects eventual size. For what it's worth, I have a male (Dutch) who was neutered when I got him at about 3 1/2 years old. He's beautiful, but not real big and bulky - a lot of the size and character is just hard wired, I think, and unaffected by hormones.