The Equus Survival Trust is a United States nonprofit organisation dedicated to helping conservation efforts for over 25 horse breeds considered "endangered" by the organization due to their rarity and danger of dying out.
It is dedicated to protecting the genetic diversity and traditional traits of historical horse, pony and donkey breeds that are currently nearly extinct.
They also have categories for "Recovering", which covers breeds previously listed that have exceeded the watch category but may need additional monitoring, and "Study", which covers breeds that are of genetic interest but need more study before they are considered for inclusion on the conservation list.
[1] In 2006, the Trust partnered with the College of Veterinary Medicine & Biomedical Sciences at Texas A&M University to carry out an equine genome research project on rare horse breeds.
[5] To promote the breeds that it is dedicated to preserving, the Trust holds or participates in various equine events.