SummaryCertain hematologic and blood biochemical parameters were determined on over 200 purebred Beagle dogs. Mean values, standard deviations, and minimal–maximal values were determined for various age categories and for each sex. The following parameters were measured and compared to cited values where they were available: hemoglobin concentration, packed cell volume, total erythrocyte, total and differential leukocyte counts, platelet and reticulocyte counts, cellular indices, prothrombin time, coagulation time, serum concentrations of glucose, urea nitrogen, creatinine, bilirubin, uric acid, cholesterol, sodium, potassium and chloride, and serum enzyme activities of alkaline phosphatase, glutamic pyruvic transaminase, glutamic oxalacetic transaminase and lactic dehydrogenas