Here, Phillip Sponenberg has provided the equine and veterinary community with a textbook outlining the genetic properties of colour as it appears in horses and donkeys. Equine Colour Genetics provides the most up-to-date information and standard terminology and nomenclature associated with horse colour genetics in a very clear, readable style. The four-colour photographic illustrations highlight the points made in the text and are crucial to understanding the subject. This text serves as a reference for horse production courses and is useful to students, veterinarians, and horse breeders. The text first delves into genetic mechanisms and interactions that explain the step-by-step process that results in hundreds of different colours of horses. Rare colours are given detailed treatment as well as the colours grey and roan. Sponenberg deftly describes how the genetic mechanisms are organised to produce such colours and patterns.