C.B. Chastain is a professor emeritus and adjunct professor of veterinary medicine and former Section Head of Small Animal Medicine and Associate Dean for Academic Affairs at the University of Missouri. He also has been on faculty at Iowa State University and Louisiana State University. In addition to being a Diplomate of the American College of Veterinary Internal Medicine, he has authored journal articles, book chapters in veterinary medical and allied publications, and textbooks on clinical endocrinology and animal handling and physical restraint. He was also chief editor of the monthly journal, Advances in Small Animal Medicine and Surgery for 20 years. Prior to entering academic veterinary medicine, he was a horse wrangler for a horseback riding stable and a licensed guide in Rocky Mountain National Park, Colorado; worked in mixed animal veterinary medical practices in Missouri, Illinois, and New Mexico; and a captain in the U.S. Air Force Veterinary Corps. He has handled, restrained, and trained a variety of animals in differing environments and taught aspects of animal handling for more than 40 years at the undergraduate and professional school levels. Currently, he is a professor and consultant for Veterinary Online Programs at the University of Missouri.