I got Frost from that quest over in Riften, and while having a horse is certainly pretty cool, it can get a little bit annoying having it fast-travel with me everywhere I go.
So, I was wondering it it's possible to stable the horse or somehow prevent if from following me (other than the obvious solution of, I don't know, killing it?), because I very much prefer to do all of my exploring by myself - I don't want to have to worry about it getting killed or running off or anything of the sort. It really breaks my immersion and takes away from my enjoying the game.
Maybe I could try leaving his ownership papers in a chest or something... Edit: Nope, that didn't work.
Other than that, however, I am absolutely *loving* the game.

Thanks for your time!