Dung may seem a strange subject for a book, but the dung of herbivores (in particular), provides a rich environment upon which a diverse and little known community of fungi flourish. This manual is about these fungi. To date the study of dung fungi has remained the prerogative of a few enthusiastic mycologists, yet there is nothing intrinsically difhcult about studying them, or using them as teaching tools. The aim of this book is to direct the interest of both the teacher and the budding research biologist alike into the realms of these tiny but beautiful fungi.