The study was undertaken to ascertain if the normal thrombocyte count in Polish ogar dog differs from normal values in other dog breeds. The reason for this study was constatation that during routine blood analysis in healthy Polish ogar dogs, thrombocytopenia, not related to the clinical state of the animals, was frequently encountered. The study was carried out on 38 Polish ogar dogs. The control group consisted of 80 dogs of various breeds. All the animals were clinically healthy. A full hematological analysis was performed. The mean platelet value in all dog breeds without the Polish ogar dogs was 344.4 +/- 6.85, while the mean number of platelets in the Polish ogar dogs amounted to 167 +/- 11.6 G/l. The limited genetic material used to rebuild the Polish ogar breed after its drastic decline during the Second World War could be the reason for various, including hematological, abnormalities that with time became a normal characteristic traits for this breed.