Coagulation and fibrinolysis in the dog

A range of tests of coagulation and fibrinolysis was measured in "normal" dogs and compared with values obtained in "normal" humans by the same methods. The hematocrit platelet count, fibrinogen and plasminogen were similar in dogs and in humans. The prothrombin and partial thromboplastin times were considerably shorter in the dog than in man but the thrombin clotting time was comparable. Fibrinolysis was more active in dogs but the levels of fibrin degradation products were low, suggesting that there was no significant fibrin deposition and lysis occurring in vivo.