David Bainbridge is a reproductive biologist, popular science writer, and the Clinical Veterinary Anatomist, the world-top-ranked Department of Physiology, Development and Neuroscience at the University of Cambridge. As well as many academic and clinical publications, he has written seven popular science books, widely reviewed, discussed and translated. He is a fellow of St Catharine’s College, Cambridge, whose alumni include John Ray, the originator of the biological term “species.” David Bainbridge is the definitive voice on zoology classification.