To notice a limp and determine where does it come from?

Answer 1

Make the horse trot by jogging alongside it while leading it. If the horse is lame, it will look as though it is limping. You can tell where it comes from by watching the horse's feet and head. If, when he puts one front foot down and his head goes up, it means he is lame in that foot. If the same happens with a hind foot and his head goes down, he is lame in that hind foot.