Hi, I'm new here and desperate for help. I have a 9 year old ex-racehorse who was gelded last year. He is in general a very sweet horse. But he seems to have some issues. Last year I walked up to him and gave him his 5 in 1 shot no problem. That was after he was gelded at the clinic. This year we have the vet out to do coggins and rabies. The drawing of the blood went fine but when it was time for the shot he freaked out, rearing up and getting away and being really freaked out. He didn't try to hurt anyone just trying to get away. More scared than vicious. Gave him sedative by mouth but couldn't get him to calm down. So now I'm trying to desensitize him, touching and poking him all over and eventually the neck trying to show him that nothing bad will happen. It doesn't work, he just gets more tense the longer I do it getting to a point where I can't even get near his neck. And now he snaps at me. But when he thinks I don't really want anything from him I can still touch him all over, brush him and stuff even on his neck.. I don't know what to try next. Not crazy over vets idea to dart him every time he needs a shot. I would be greatful for any advice/idea.