It is nearly unheard of with ranch horses as they get to live like horses & ain't in stalls with blankets, overfed & all kinds of supplements, just rode the crap out of once in a while, fed treats, etc, etc...Not a knock on the OP but it's just a fact...

Life's tough, it's even tougher if you're stupid. - John Wayne

Hobble break all of your horses!  www.pdjoneshorseranch.com

"Listen, and understand. That pdj is out there. It can't be bargained with. It can't be reasoned with. It doesn't feel pity, or remorse, or fear. And it absolutely will not stop, ever, until you are dead "