The evolutionary journey of the horse, from its tiny ancient ancestor, the Dawn Horse, to the modern statuesque steed. Scientists explain the genetic basis of a horse's abilities and powerful gait. Exploration of the ways horses display their emotions and show they read ours. Partnerships with horses depend on trust as demonstrated in the training of a young horse to saddle and rider. (Part 1) Narrated by anthropologist and equine expect Dr. Niobe Thompson.