The Sable Island Horse, sometimes Sable Island Pony, is a type of small feral horse found on Sable Island, an island off the coast of Nova Scotia, Canada. It is a small type, often pony sized, but with a horse phenotype and horse ancestors, and usually dark in color. The first horses were released on the island in the late eighteenth century, and soon became feral. Additional horses were later transported to improve the herd's breeding stock. They were rounded up for private use and sale for slaughter, which by the 1950s had placed them in danger of extinction.