Horses always know how to get home. In fact, the big challenge in riding them is keeping them headed away from home.
That's the truth! I got thrown when I was a teenager several miles from home, and broke my arm. My horse trotted off and my friend wanted to tend to me since my arm was bent in a place it wasn't supposed to bend, but I said - No - go catch her and bring her back... she'll go all the way home!
Anyone who’s read any Louis L’Amour novels would know that the horse would go home.