The equine sinus system is complex and as a result can be difficult for veterinary students to master. The purpose of this interactive book is to present the equine sinus system in a new light, using a combination of illustrations, interactive 3-D models, animations and videos. In this manner, students will be exposed not only to the anatomy of the sinuses, but also to diagnostic techniques such as radiography, computed tomography, magnetic resonance imaging, and endoscopy that are used in clinical veterinary practice.