The International Society for the Protection of Mustangs and Burros (ISPMB), located on the Cheyenne River Sioux Reservation in north central South Dakota, is a nonprofit organization dedicated to a combination of land preservation, wild horse conservation, and the protection of Native American heritage. In 1968 the organization created the first wild horse adoption program, which in turn, led to BLM’s current federal Adopt-A-Horse/Burro program. The organization has an International Wild Horse & Burro Heritage Center as well education programs. The ISPMB is currently working on the creation of a management program for wild horses on public and private lands. The organization solely manages four unique wild horse herds. They are monitoring the social structures, herd dynamics, and wild horse behavior of these four herds in order to gather information to produce an ideal management program.