Horses have totally lost their thumbs and their pinkies, and run on an enlarged third finger called the cannon bone while the ring and index fingers have diminished in size, and now simply hang on either side of the cannon bone as splint bones. Katie, Rory, and Gay gathered around a formalin-stiffened horse positioned upright within a sling, winched up in a chain, so the legs were at eye-level. Removing the skin from the right front and rear legs allowed the students to follo