For the past month or so Mojo has been inexplicably full of himself--hopping around and bucking under saddle, snorting and shying while being led to and from the barn, etc. This is uncharacteristic and I've been straining my brain to figure it out--believe me, I've thought of everything... Tonight the barn owner called to tell me that a few weeks ago her husband thought some of the horses in Mojo's field were looking skinny, so instead of the usual round bale of grass hay he substituted a round bale of alfalfa. BO thinks this may be the cause of Mojo's recent behavior. I've never heard of hay making a horse hot, only grain. He eats the alfalfa 24/7--could this be the reason for the new hyper antics? Thanks in advance everybody.