Abstract: A portable corral that is hinged to the side of a horse trailer. The horse corral consists of fence panel sections that are stored flush against the side of a horse trailer and, by use of a hinge system, fold outwardly to form a corral. Two fence sections are hingedly coupled to a trailer side. An additional fence section, hingedly coupled to one of the trailer mounted fence sections, form a square or rectangular corral. One of the fence sections may include a gate for ease of entry and exit to the corral. When the corral is not in use, the fence sections are rotated back against the side wall of the trailer for storage. Adjustable feet are used for leveling of the fence sections and are retractable for storage.