So I ran across some bandits, and I do believe they were fighting guards. After I had joined the skirmish the bandits had killed the guards and I subsequentlty killed the bandits. In doing so I must have inadvertantly hit someone's horse and it began attacking me....and chasing me...impervious to my melee and magic attacks! Mind you, I'm level 25 so I thought it would be quick for the horse but the b@stard WOULDNT DIE! I finally had to rock climb to get away from him. Has anyone else run into horses like these???