Lead rope chains can KILL or seriously injure your horse or pony. Yes, you read that correctly, but yet almost daily I see someone playing Russian Roulette with their beloved equine. Looping a chain through your halter or God forbid through the bit is one of the most dangerous things you can do for your best friend. "Why," you ask, "is this so dangerous? I do it all the time and see it all the time." In fact I just saw it posted in a prominent Pony magazine and I contacted them about it and they did nothing accept acknowledge it wasn't their child and not their problem. I normally try to keep to myself but posting images where this is acceptable just perpetuates the problem.
Scenario..... Pony is in a leadline class and has the chain looped through the bit forming that perfect circle. Handler is busy chatting since pony is a saint, pony has an itch and puts his head down, picks up his foot, inserts it in chain, A couple of things can happen: One: pony puts head up and breaks jaw/Two: Pony lifts head, freaks out and flips over/ Three Pony breaks leg.
All situations are terrible and happen more than you would think. I saw a horse break his jaw and then flip over on his rider, crushing her. Same problem happens with a halter. Horse puts his head down to graze and same situtations occur. Sometimes nothing bad happens, horse is calm and doesn't overreact or horse gets his foot out in time, but is it really worth the risk? Is it really something you want to chance? Do not loop the chain of a lead rope chain EVER for any reason.