So I have figured out that I think my gelding does NOT like (or is afraid of) mules?? I take him everywhere.....team penning, sorting, trails etc and he is perfect with other horses. Never bats an eye....can have them loping circles around him in an arena, can stand in a group with them, can pass them on very narrow and tight trails, can trailer with a stange/new horse, never an issue. However, three times now I have encountered mule riders on my trail rides and my usual calm steady horse is a basket case!! He freaks. If they pass us he is soo tense and quivering and wants to explode and is just agitated. If we need to pass them he blows and tries to to get as far away as possible, head high and just wacky.
It is the oddest thing? He settles right down once we are past but it is so unlike him to act that way. I have put together the ONLY times it has happened has been when the other riders were mules and not horses. Anyone else had a similar experience??