In this case lesions that occured due to a grass awn detected in the right auricle of the heart of a 6-year-old female, German Pointer were described. Presenting signs were abdominal distention, icterus, anorexia and lethargy. Radiography revealed hypervascularization and loss of contrast in caudal lung lobe, elevation of trachea, hepatomegaly and splenomegaly. The echocardiography revealed dilation of the pulmonary artery and the right ventricle and paradoxiyal septal motion. A presumptive diagnosis was made of liver and right heart failure. Abdominocentesis and symptomatic treatments were administered to the patient. However the patient did not respond to the therapy and gradually deteriorated and she died within a month. At the necropsy transudate was observed in the abdominal cavity at an approximate amount of 2 lt. The grass awn was detected in the right auricula of the heart. The lungs were swollen and mottled. The liver was over-enlarged and congested. Histopathologically, myocardial necrosis was evident. Annular foreign bodies putative of grass awn, foreign-body giant cells with multiple nuclei and foci of abcesses with numerous dejenerative neutrophil leukoctytes were observed in myocardium. Cellular and purulent bronchopneumonia and thrombosis were typical in the lungs. Furthermore, portal venous vessels and hepatic lymphatics were dilated and collagenous fibrous proliferation was evident within the walls of the vessels.