My 26 year old gelding (Morgan/Quarterhorse cross) has started spinning in circles in the field over the last month or two. Sometimes he spins 2-3 times, then walks 10-15 paces and does it again, then walks somewhere else and does it again. Then he starts eating grass. It seems to always be to the right, and it’s not at a frenzied pace - just turning in circles.
He does not stumble, fall or have trouble walking or moving in any way or at any time. He is still eating grain, hay and grass normally, and relating to his pasture mate in the usual manner. He does not seem to do it in preparation to lie down or roll, but he is physically able to lie down and/or roll at other times. My vet has never seen this before. Any ideas?
Many thanks!