Full professor of agricultural sciences in the discipline of veterinary medicine, employed as a professor at the Faculty of Veterinary Medicine at the University of Warmia and Mazury (UWM) in Olsztyn. The professor’s research interests are related to the diagnosis, pathology and therapy of internal animal diseases. The main area of his research is gastroenterology of companion animals with particular emphasis on endoscopy in the diagnosis and treatment of gastrointestinal diseases in dogs. In recent years, the professor’s research interests concern the study of the etiopathogenesis and therapy of inflammatory bowel disease in dogs and the usefulness of bisphenol A determination in healthy dogs and dogs suffering from chronic gastrointestinal diseases.