Abstract: A horse shoe cassette system for an animal's hoof. The cassette system comprises a plurality of hollow holders that are screwed into the hoof. Each holder has a threaded outside surface and a threaded inside opening defined therein. A flexible covering, of a general hollow ungulate shape to fit an ungulate's hoof, has a bottom plate that includes a first opening defined therein. A horse shoe is attached to the bottom plate of the flexible covering and the horse shoe has a second opening. A threaded screw member extends through the first and second openings and is screwed into the threaded inside opening of the holder disposed in the hoof.