John S. Munday is a Diplomate of the ACVP and a boarded veterinary pathologist. He has good knowledge of the pathogenesis and diagnosis of a wide variety of endemic and exotic animal diseases. He has worked as a diagnostic pathologist in both New Zealand and the United States of America for about 20 years. Using his pathology background, he has previously collaborated with studies examining tissues from a variety of animal species, including mice, rats, rabbits, sheep, fish, and horses. Currently, his main research interests are the diagnosis and prognostic markers for neoplasia in companion animals and the role of infectious agents in the development of cancer in domestic species. He recently wrote a chapter in the premier textbook in veterinary cancer pathology and has broad knowledge of the diagnostic techniques and prognostic markers available both in veterinary medicine and for some cancers of people. His interest in infectious diseases has resulted in establishing an association between papillomavirus infection and skin cancer in cats and much of his current research is further validating that relationship and developing clinical applications for this knowledge. During this time, he developed skills in molecular biology and he was the first to fully sequence and classify two papillomaviruses from domestic cats. He was also the first to prove that the papillomavirus that causes feline sarcoids has a bovine definitive host.