In the present study biochemical polymorphisms were investigated in blood of different race hounds and compared to those of other dog breeds. Twenty-three proteins were separated electrophoretically in starch gel and polyacrylamide gel respectively. For 9 proteins genetic variants could be assured: postalbumin-1 (PA-1), postalbumin-3 (PA-3), transferrin (TRF), plasma esterase (ES), leucine arylaminopeptidase (LAP), haptoglobin (HP), glucose phosphate isomerase (GPI), superoxide dismutase (SOD), albumin (ALB). The already known HP polymorphism was analyzed and described in more detail. In addition, a sex independent variation was found for the GPD.