Yeah, we have one. We got him from some folks in North Central KY, but I'm not sure if they're breeding them anymore.
Our guy was raised around goats and poultry, and he pretty much has no prey drive at all.. As such, he's fine around pretty much whatever you wanna leave him in with, so long as it doesn't pose him a threat or make him nervous.
As for training, they're extremely smart but prone to independent thinking. Whereas a lab, shepherd, or almost any other more common, non-LGD breed of dog is so eager for praise or treats or just
acceptance that they'll literally roll over for an enthusiastic "
Good job!!" and maybe a belly rub...well, the Sarplaninac just isn't that interested in pleasing you.
We've done some treat-training with him and he picks it up easily enough, but we'd actually rather him just keep on thinking for himself.. His ability to do that is what makes him such a fine guardian, as he doesn't
need anyone out there to give commands at those critical moments.. If were were always gonna be there at those moments, we wouldn't need him anyway.
I guess what I'm saying is that I know they can be trained, if you understand the dog's tendencies and want to go down that road. They even used them as police and army dogs in the former Yugoslavia, beginning post WWII. In thinking of that, I can't help but picture something akin to Schutzhund training, but with a massive and extremely powerful dog, the combination of which would certainly create a force to be reckoned with.
A fenced area of 2.5 acres should be plenty.. In my experience, they don't patrol much. Ours knows his area and keeps his eyes and ears open 24/7, and if something bothers him, he goes on alert...but he's not pacing fencelines or anything like that. For example, just yesterday I was out on the front porch and I hear him scramble to get up and then he BOLTED to the fenceline facing the road, then he went absolutely berserk barking. This was his angry bark, too...he was clearly
seeing something I wasn't. (These dogs have distinctive barks for different situations...just as we humans have, our goats have also learned his different barks and they respond appropriately.) I looked all up and down the road and tried to figure out what he was looking at and then noticed, waaaaaaaaay up on the ridgeline across the road on the neighbor's property, probably 1/2mi away, were two tiny silhouettes of men walking. It's late muzzleloader season, so I'm assuming they were hunters. I dunno how he came to see those guys up there but he did, and he didn't like it. He barked until they went over the hill out of sight, and then he was happy again. I'd never have seen them, but he sees everything.
Really, the only problem I have with the Sarplaninac is that they're so few and far between.. If something were to happen to ours, I'd want nothing more than to have another....but getting one is just as much a problem for me as it is for you. We just happened to have gotten EXTREMELY lucky in finding the one we have -- truly a once-in-a-lifetime find.
If you can't find a Sarpie, you might consider looking for a Caucasian Ovcharka.. There's a breeder in Montana that I know of, and the dogs look almost identical.. In speaking with her (we were looking for a potential mate for our Sarpie) they really seem to have the same temperament.. Might be able to find one of those more easily.. Beyond that, I dunno.