The course aims to provide a general introduction to the biology of parasites in animal. It covers the major parasitic groups, parasitic protozoa, monogeneans, digeneans, cestodes, nematodes, acanthocephalans, and parasitic arthropods, including taxonomy, host specificity, morphology, life cycles, etiological, and treatment. By the end of the course students should have gained knowledge and understanding of the causative organism, an understanding of the major classification different between important parasites, detailed knowledge of the life cycles of a range of parasitic organisms affecting domestic and wild animals, and understanding of the problems encountered by parasites to their hosts and how these may be overcome.