Want to learn more about the science that fuels the world’s hardest working horses? We’ll hit the ground running with Lou, a three-year-old grey quarter horse gelding and a rising star in research and innovation at the Purina Animal Nutrition Center, often called “The Farm.”

Lou’s story is part of Purina’s “Full Rein” series. To see other extraordinary horses in action, visit www.PurinaMills.com/fullrein for documentary films, interviews and podcasts.