I've been looking into getting a llama as a guard critter for my small herd. Someone close to me has a 12 year old male for $200 that she thinks would be very good. She suggests we geld him, though. Does that work? Gelding a male that late in life? I thought once they'd tasted what testosterone did, they never really are a gelded critter, and could still be a danger to my ewes.