We have a 1.5 year old that came to us from a really bad situation almost a year ago. He has made huge strides since he came here and will pretty much let you do anything to him. Great with the farrier, leads, ties, is accepting of everything you throw his way. The problem is this...intermittently he will just freeze up and zone out. It is almost like he goes into some kind of catatonic state. We have tried everything we can think of to snap him out of it, but nothing works anymore. It can happen when he is being led or when he is being tied. Used to happen when he was just standing in his stall, but that hasn't happened in quite a long time now. We have tried a tug on the lead, clapping hands, wiggling his top lip, a smack on the rump, a holler, playing with his ears....nothing works. If you put your hand near his eyes....he doesn't even blink when in this state. After several minutes (has lasted up to 10 minutes before), he just comes back like nothing has happened and continues on with whatever was going on before hand. It can be really unnerving. When this first started happening, if you took hold of his top lip and just fiddled with it back and forth, you could pull him out of it, but now that doesn't work either. Anyone have any idea what could be causing this or how we can help him get over this? We can't find any common denominator
as to what is going on when this happens, time of day, or anything like that.