a spider horse does: http://i.imgur.com/ULWT4.jpg Yes I was playing on low. I also glitched through a cave with my horse, and it was hilarious because I was lying on the ground sliding around shooting lightning bolts, but I somehow got up before I could record it..
Climbing the 7,000 steps, I get off my horse to fight an Ice Troll. The next thing I know, my horse is magically catapulted into the sky with more force than any Fus-Roh-Dah. :bolt:
It disappeared into the horizon and I never saw it again.