You watched the gelding though, didn't you? The vet removed both testes? I would assume yes, because even the dumbest vet is aware of the complications of leaving a testical, and I'm pretty sure you would have noticed had he not done two snips :P
However, there is also the possibilty that he is proud cut. Not because the vet missed anything (honestly, its been years since I've heard of the vet missing anything in a gelding!) but maybe because he is producing more than normal testosterone in his adrenal glands.
I don't think his neck development is abnormal for his breed though, is it? It didn't look overly thick or cresty to me. It just looked like he was starting to fill out the way he should. Maybe it looks weird because you were used to seeing it thin before?
When you mean that his attitude is really studdy, do you mean that he's rearing and striking and squealing? Or being overly involved with the mares? Because that's typical stud colt behavior for those that aren't taught differently or gelded.
Or is he maybe just not listening to you as much? Or invading your space?
I would guess that he's just testing you out. Remember, they say that yearlings and two year olds are like equivalent to 7 year old kids. Smart, irritating and always testing the limits ;)
So I'd play it by ear for a bit. I would guess that he's likely figuring out what to get away with, and if your constant with him, you'll see it decrease. (and if not, then you can always have the vet draw a blood sample and run his pannels)
Last edited by Skyhuntress; 11-06-2008 at 08:22 PM.