In twenty-nine years, teaching of the subject 'Nosology of Exotic Animals' has acquired a specific content and taken on a structural form. A sort of 'clinical pathology' developed, which yielded many fruits. The Department of Nosology of Exotic Animals stood up for the conservation of animals in danger of becoming extinct by stimulating breeding of these animals. Various methods are used in comparative nosology. Not only clinical processes but also species of animals and pathological reaction patterns are compared. As regards education, an approach from the point of view of pathology is essential for the time being in transmitting the understanding of processes of disease, based on morbid-anatomical and patho-biological findings. Future scientific developments are mainly anticipated in teaching on the subject of small companion animals, knowledge of the nosology of laboratory animals, animals in zoological gardens and those living in the wild. Studies will be partly on research level; they will, however, take the form of setting up special projects wherever possible.