Horse
Depending on breed, management and environment, the modern domestic horse has a life expectancy of 25 to 30 years. Uncommonly, a few animals live into their 40s and, occasionally, beyond. The oldest verifiable record was "Old Billy", a 19th-century horse that lived to the age of 62. In modern times, Sugar Puff, who had been listed in "Guinness World Records" as the world's oldest living pony, died in 2007 at age 56.
Equus Survival Trust
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 are doing this through conservation efforts, public education and support of associations for rare breeds. The organization places an emphasis on North American breeds and breeders. The Trust is the only conservation organization in the world that specializes in equines.