Equine Veterinary Journal has been delighted to work together with the American Association of Equine Practitioners to produce this supplementary issue. The supplement is the result of considerable effort on the part of authors, reviewers and our Editorial Team. I would like to take this opportunity to thank Dr Jim Moore, EVJ's North American Editor and our Guest Editors, Drs Nat White, Deb Sellon and Pat McCue for their hard work in ensuring that the manuscripts were reviewed promptly and rigorously. I also thank Sue Wright and Jane Woodley in EVJ's office and Carey Ross in AAEP's office for their help and support of this project.