Originally Posted by kitten_Val
You can't do much except moving your horse in your own place.
Eh, moving them home won't prevent them from getting their tails or manes chewed. It'll just be their herd buddies who do it, instead of some other person's horse. Ask me how I know this.
Sorry OP, I know how annoying it is to find a mane/tail gone, but it's just horse nature and it's nobody's fault. Sh*te happens, and your BO is most likely too busy notice whose horses are allowing themselves to be made into a chew toy.