The 16 international contributing authors - some working in universities, others in equine practice - have combined to provide a systematic Colour Review of all aspects of equine internal medicine. Coverage includes neurology, cardiology, respiratory disease, gastroenterology, urology, infectious diseases, parasitology, haematology, oncology, endrocrinology, reproduction, dermatology, ophthalmology and clinical nutrition, in foals and adult horses.The cases appear in random order, just as they would in practice, and are presented as self-assessment problems comprising integrated questions, illustrations and detailed explanations designed to educate as well as to provide answers. The Colour Review will appeal to candidates preparing for examinations and practitioners in their continuing professional development.