The growing interest in questions of clinical immunology, along with a wealth of intriguing research findings in this field, has led to the compilation of foundational knowledge and clinical experiences in a unique work. As a reference book in clinical immunology, it can assist small animal practitioners and students in applying immunological principles in practice, contributing to the understanding of clinical cases as well as successful diagnosis and therapy. The first section of the book summarizes the functional mechanisms of the immune system in an impressive and very comprehensible manner, using numerous colored diagrams. The clear, consistently recurring structure and excellent colored illustrations facilitate an easy grasp of the disease patterns. For all diseases, both pathogenesis and clinical presentation are addressed.