Ed Hall is Professor of Small Animal Internal Medicine at the University of Bristol. A Cambridge graduate, he undertook postgraduate clinical and research training in Philadelphia and Liverpool. He is a Diplomate of the ECVIM-CA and was a member of the WSAVA GI Standardization Group and the European Emesis Council. He is the only RCVS Recognised Specialist in Small Animal Medicine (Gastroenterology). He is author of the small and large intestinal diseases chapters in the Textbook of Veterinary Internal Medicine (eds. Ettinger, Feldman and Côté) and the chapters on flexible endoscopy in the BSAVA Endoscopy and Endosurgery Manual. He was co-editor of the BSAVA Manual of Canine and Feline Gastroenterology.