(1)It is very unusual to see all horses in the same field lying down at the same time.This is because one of the horses always stands on look out so that he can alert the others to any dangers there might be.(2)Did you know that Arabian horses have one less rib, one less back vertebrae, one less neck vertebrae and one less back vertebrae than any other horse in the world.(3)Horses can lock the muscles in their legs so that they can go to sleep standing up and wont fall over.This was a very useful trick when horses lived as wild animals and they needed to be able to make a fast get away from any predators(4)Did you know because of the position of a horse's eyes on either side of the head they cannot see objects directly in front of their noses. This also means they cannot see their food when they eat! This also means that they cannot see a jump once they are about 4 feet from it.