I have a valkyrie currently training my horses. She is kept below level 50 for the present to prevent PvP interactions. What happens (not often) when I sleep she will get blocked on her route by harmless NPC critters and the horse will just stop dead in its tracks. Bunnies and weasles are benign but they can pose a serious issue when training outside of town. I had one of the 5 hour scrolls on her too. This means I have no idea as to how much training was accomplished using that scroll.
I know many players train inside towns, but this congestion adds confusion to the game. Also I have wittnessed players getting stuck in buildings as well. I would like know, if the developers could be a tad bit more "real" about the horse versus bunnies conflict. Either make the bunnies non-blocking or at least when the horse steps on the bunny it dies. Unless these are the Killer Rabbits of Caerbannog, horse hoof versus bunny is a no brainer. This doesn't happen very often, but often enough to make a posting about it.
Thanks for your time.