This swine is called a Landrace swine. The development of the breed began in about 1895.
This is a American Yorkshire swine. The Yorkshire breed was developed in Yorkshire, England, circa 1761. In 1830, the first Yorkshires were imported to the United States, specifically to Ohio.
This is a picture of a internal swine/pig.
This is a Duroc swine. The Duroc breed of hogs had its origin in the eastern United States and in the Corn Belt.
This is a picture of a external pig/swine.
This is the Hampshire swine. The Hampshire breed of hogs may well be one of the oldest original early American breeds of hogs in existence today.