Debbie Busby is an equine behaviorist with degrees in applied animal behavior and welfare and psychology. She is certified by the International Association of Animal Behavior Consultants and runs the website Evolution Equine. Catrin Rutland is associate professor of anatomy and developmental genetics at the School of Veterinary Medicine, University of Nottingham, UK. She writes about science for a number of leading UK newspapers and magazines, including the Telegraph and the Guardian.