The article presents the results of studies conducted at the veterinary clinic «Jean» in the city of Pavlodar. It is noted, that for the period 2013-2017. 348 cases of disease in dogs were registered by pyroplasmosis – a protozoal disease caused by parasitic organs of the genus Piroplasma. The authors described the clinical symptoms of disease in animals, as well as the nature of the flow of infectious diseases.