You approach with caution, drawn to their equine beauty. The sleek stallion, the magnificent mare, and the gentle foal look like any happy family. But don t get too close. These are wild horses, untamed by humans. Now photographers Yva Momatiuk and John Eastcott take you inside the world of the wild horse. This husband-and-wife team of committed experts makes a case for the conservation of one of America's favorite wild species.