He didn't overreact like a lot of horses I've seen do. He just reacted to the shock, spun around and trotted away. He's such a stoic horse! I still remember when he had the puncture wound in his hock and the vet was digging in it and flushing it out. Chrome lifted his hoof, but didn't react otherwise. I think the vet was surprised lol.
Anyway I know he will have to touch it a few more times before he realizes it's the fence, because right after getting shocked he went around the barn and slammed his chest into the gate.... brat! He will figure it out though and hopefully my fences won't take anymore damage. Now everyone needs to keep their fingers crossed that the dang deer don't hit it while jumping over the fence and tear it up.