Stealing a horse

In the day I find Uzhitz’s stables. I need a new horse, i think to myself. Go there at the middle of the night, knock out stable boy, and ride off on the best horse. So now I stand in the field, me, my new hourse and Pebbles. So i can’t get rid of Pebbles, nor mark the stolen horse as my main. Okay i think, I’ll just off Pebbles, it’s cruel, but I don’t have any other way. And after 10 minutes of trying to kill the poor thing, I think that Sir Radzig made a mistke. Cause he given me a fucking terminator, no matter how much damage I deal to the thing, it regenarates all it’s health anyaway. So, is were any way to appoint stolen hourse as your own (with consiquences if were are any) or not? Cause if not, then I think it needs some fixes.

I don´t think it is possible to “legalise” a stolen horse. If you know how, please post.
But mounting a stolen horse and beeing seen is bad. The NPCs run to the next guard, and the guard tries to arrest you…

I mean like, not even “legalise” it, but just put it in slot for a hourse. But if NPCs so eager to call guards, maybe it’s a good thing you can’t do that.

you only see your own horse in the slot
you can buy a new horse then your old one will be exchanged for the new one