There aren't many horses where I come from. Hardly any, actually, certainly I've never ridden one, only the real nobles got the chance to do that. I was just as relieved, actually. Falling over when you wear plate armor is painful enough when you only have a few feet to fall, and those things are tall!
I'll keep an ear to the ground for information about horses; aside from one girl I met who could turn into one, I'm afraid I don't know much, but I'll let you know if I come across anything.