Hi guys, my horse has been doing this weird leg thing lately and I am trying to work out why. He does amazing trot work and his canter is getting alot better but occasionally he will throw his back legs out and up- its not a buck or a pig root but it is really weird. I drive him forward with my legs and sometimes that works but more often than not he actually almost stops to do this weird leg thing so pushing him on pushes him into trot if you get what I mean. The flies have been really bad where we are and I know he has very low tolerance for them so i wonder if its that but I am not sure. He is not sore, his saddle fits and he has been doing his best work ever apart from this. I don't really understand it because normally if he was being silly he would just buck alot, not do this weird thing. he did it in canter right today 4 or 5 times and then did it when we tried to do some trot work after that which is very weird and why I was thinking it was flies. It doesn't feel like he is trying to dump me cos if he feels like that he just has a bucking fit.. (which rarely happens anymore) Anyone have any ideas?