I recently took over Harry from my wife, who's had him since Sept./Oct. Even though he's from off the track we've been amazed at how good natured and calm he is. Even the local pig that most horses get bent out of shape about phased him only the first few times he saw it.
Then, about three weeks ago we rented some pasture space behind the barn and let him spend all day out there. We would bring him in every night, but we noticed that he was starting to act... weird. He would spook at things that normally wouldn't bother him: a wheel barrow simply sitting off to the side, a duck, the cat that hangs out in his stall. He refuses to go into the tie-out rack any more. Also, Harry used to love the round pen. He would even lunge himself if left alone, and was always enthusiastic about going into it. Now he refuses to walk into it unless I back him up and walk him in circles several times.
After a week of him being on pasture we took him off, unsure of what was causing the problem. It's been two weeks, and he still isn't the same. He's still eating and drinking and making manure -the things he does best- but the weird behavior hasn't gone away. I made an appointment for the Vet to come out this week but I can't see how this is a medical problem.
Has anyone had any similar experience?