Dr Peter Hill is senior lecturer in veterinary dermatology at the University of Bristol, combining clinical and teaching responsibilities with an active research programme. He holds the RCVS Diploma in Veterinary Dermatology and is a Diplomate of the American College of Veterinary Dermatology. He is the author of over 50 scientific publications, is a former Editor of the journal Veterinary Dermatology Sheena Warman is currently a lecturer in Small Animal Internal Medicine at the University of Bristol with special interests in emergency medicine and critical care. She obtained the RCVS and European Diplomas in Small Animal Medicine in 2004. Geoff Shawcross qualified from the University of Liverpool in 1970, and has since spent his whole career in general practice, dealing primarily with small animals. After taking over ownership of a small animal practice, he built it up into a veterinary hospital. He obtained the RCVS Certificate in Small Animal Orthopaedics in 1989. He has broad interests in all aspects of small animal practice and surgery.