He has a 1 out of 10 chance od throwing a lethal white foal.
He's my horse.
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Hey...a lot of people on this forum will jump down your back fairly quickly when it comes to breeding, especially when it comes to something like LW. Heck, I'm one of those people. Just don't be so defensive about it...these are only our opinions, of course you're going to do what you want regardless. And if that means taking a gamble with the lethal white, then once again that's your perrogative. Remember we're not attacking you, we only have the horse's and his potential offspring's best interests at heart.
IMO, he's a nice horse, but would make an even nicer gelding. If I was in your shoes I'd have to seriously ask myself just what about him would make his offspring worth anything. In a world overrun with unwanted horses, everyone needs to think twice before breeding. Especially from young studs who have yet to accomplish anything and are pretty average, conformation-wise.