Has anyone figured out how horse health works in the game yet? The possibilities I've thought of so far is they heal naturally over time, they heal when boarded, heal when fed apples and other objects (with the love effect going even though their companionship is at max), or they don't heal at all. Obviously the last one is the most nerve wracking as it would suck if they have a limited amount of hits they can take like the weapons do. I've done two test kills on freshly caught horses that have not been registered (which killed me a little on the inside) and they had a surprisingly low amount of health.