באתר Live-Science http://www.livescience.com/[…]ry-america-wild-horses.html earliest-known horse LiveScience The Surprising History of America's Wild Horses wild ass Equus across North America earliest-known horse earliest-known horse http://www.livescience.com/[…]ry-america-wild-horses.html cite http://www.livescience.com/[…]ry-america-wild-horses.html Equus across North America Equus across North America introduced to the Western U.S. by Spanish explorers LiveScience The Surprising History of America's Wild Horses The Surprising History of America's Wild Horses The Surprising History of America's Wild Horses http://www.livescience.com/[…]ry-america-wild-horses.html LiveScience earliest-known horse http://www.livescience.com/[…]ry-america-wild-horses.html Native Americans hadn’t domesticated horses, introduced to the Western U.S. by Spanish explorers