I think you are doing an amazing job with your stud. I agree that he's not aloud to 'hang out' when I'm around him or any other person for that matter. I have told people that if he's being a stud around them then they can give him a quick smack to the chest barrel or rump and if that doesn't work they can make him work so he has the respect of everyone in contact with him and not just me. I don't know what kind of horse you have but because mine is a draft I started teaching him to lift his legs with a tap on the leg to let him know which I wanted, push his leg forward until I got it to bend, and then I'd use a lead rope to help me lift and hold his leg up before he got the hang of it. Because my body wasn't up next to his he couldn't lean on me. I never gave him the option to lean because if I felt the weight get heavy I'd drop the leg a bit or completely teaching him to hold it himself. I also agree with doing circles, bending, and other work when he's misbehaving whether it's calling out to the mare or acting studly towards you or anyone else (also other animals such as dogs, cows, or any animals at your barn). There might me times when it's hard to deal with him but the more vigilant you are and the more work you do with him the better he'll be.
I disagree with what other people have been saying about how dangerous stallions are. A stallion that isn't trained correctly will be dangerous. However the properly trained and socialized stallion will act no differently then any other horse. For example I have an 18hh Belgian stallion that I've trained from nothing that I bring to shows all the time and he's never once gone after a mare. In fact the people who own the mares have a harder time controlling their horses around mine than I do controlling my boy around them. He's also paddocked with a gelding, adjacent to both another stallion separated by electric tape (not electrified), another gelding separated by electrified tape because the gelding isn't friendly, and a mare about 10 feet in front of him across in another paddock. He hasn't acted out at any of the horses around him since I've finished training because he knows not to act out. If he acted studly or tried to act like head honcho over me then he got worked. It's a lot of work but if you're willing to do it then I wish you the best of luck. Don't let other people bully you around and decide what to do with him, he's your horse, your opinion is the only one that matters, and if you want to keep him in tact then go for it.
I never even thought about the poor dogs. NOOO!
Maybe its an age thing.. I'm unsure when testosterone kicks in but my dad and I think he may bat for the other team. He just doesn't seem interested in mares... wait.. he may be lulling me in to a false sense of security!
I did a ground work session today, two poles, three cones to bend in and out of and a plastic rubbish bag I split and lay out and put sand over either end to hold it.
He did. Everything. No joke. I had my knotted halter on just in case, and apart from an initial hesitation at the bag, he did everything. Over, and over, and over. I couldn't have asked for better.
Not only that, I took the halter off and he followed me around.
I think so long as he has his ground rules, and he knows what they are, and we work together and he trusts me, we'll get done what we need to