hi there i ride an irish sports horse mare for a friend and she is usually really quiet as she cam from a riding school.she has never put a foot wrong in the 5 yrs my friend has had her. i took her for a walk as i normally do on her headcollar and lead rope and she was nowhere near her usual placid self.it was like having a racehorse on the other end of the rope. she was spinning circles and trying to rear etc.i percervierd with her and carried on the the wak regardless.we only walked to the end of the road and she was sweating as if she'd won the grand national.foam steam the lot! and then we went out on a ride a couple of days later and she went mad.she was bucking and once she ahd me off her back turned and bolted for home. i was really worried as their is a blind bend at the bottom of the field we were riding in.luckly she went back to the yard totally un injured. both of us.luckily my friend was with me walking her feild companion.we couldn't see anything that could have spooked her. BUT we found something simlar to high energy pellets in her field. we knew this was really strange as she doesn't get hard feed. if she does get feed it's a bit of chaff and carrots! sp we think someone has been feeding her is this our imagination or do things like this happen.or can anyone else think of a reason she went like that. the following has been done. teeth back farrier lunged with tack on (was fine so it's not tack) lunged without (was fine again) spring grass has never affected her before.