The Banker horse is a breed of feral horse (Equus ferus caballus) living on the islands of North Carolina's Outer Banks. It is small hardy and has a docile temperament. Descended from domesticated Spanish horses and possibly brought to the Americas in the 16th century the ancestral foundation bloodstock may have become feral after surviving shipwrecks or being abandoned on the islands by one of the exploratory expeditions led by Lucas Vázquez de Ayllón or Sir Richard Grenville.