Chincoteague

Pony

The Chincoteague Pony, also known as the Assateague horse, is a breed of pony that developed and lives in a feral condition on Assateague Island in the United States states of Virginia and Maryland. The breed was made famous by the Misty of Chincoteague series written by Marguerite Henry starting in 1947. While phenotypically horse-like, they are commonly called "ponies". This is due in part to their smaller stature, created by the poor habitat present on Assateague Island.

http://en.wikipedia.org/wiki/Chincoteague_Pony