A white marking may be found across the entire heel or just on one side. The coronet occurs as the first inch above the hoof and extends all around the hoof including the heel. A pasterns marking which is irregular and extends to the ankle joint at only one point is called a partial pastern. A white marking that extends to midway between the coronet and the ankle. An ankle marking extends from the top of the hoof to the top of the ankle joint.
Partial markings can occur in both the stocking and half-stocking categories.
It is not always easy to predict the color a grown horse will be from the shade it appears to have as a foal. Most foals are born with lighter colored coats than they will have when they shed their baby hair, with the exception of gray horses, which are born dark and progressively become lighter. Most foals will start to lose fuzzy baby hair around their eyes, nostrils and at the base of the tail fist, followed by the legs. Look for smooth hair in these areas - the color of this hair will usually indicate the foal's permanent color. If the foal coat on the legs is replaced by chestnut hair and the mane and tail are not black, the foal will most likely be a chestnut.