I have a 5 month old foal who was born late and kept at the stud farm for his first 2 months while his legs strengthened. He had to be put on box rest during this time and since he has been home, we have noticed he is box walking round in circles. At first we thought it was just the mare being messy and it took us a while to see that it was actually the foal who was walking round her in circles - the mare does not box walk. This only happens at night when they come into the stable/barn area. The stable door is left open, so they can go outside if they wish and he shows no signs of doing it in the barn or when he is out in the field during the day. He does not appear stressed and usually snatches a mouthful of hay as he goes past the Haybar when he is doing it. Does anyone have any methods to stop him doing this ?