A few days ago our mare leant her rear end against a gate post and pushed back into it. She isnt rubbing, she just backs up to it positions her bum and then leans back and exerts force. Two nights ago she did the same thing against the side of her yard that runs off her stable...only problem is that the wall in question is also the wall of a tack shed, she is also kicking out at this wall. She is not in season, not wormy, but has just started this behaviour a couple of days ago. I am completely baffled as nothing in her routine has changed, her manners are still the same. I thought the kicking was flies so she is drowned in fly repellent, but did the same thing last night. I have given a few hundred $ to the agistment owners and we will put up rails against that wall and hang rubber, but just wondering if any others could offer some suggestions as to why she has suddenly started this night time destruction. She does have hay all night, a Likit, an empty stable next door cos she likes her own space...any ideas???