Pericardial effusion and cardiac tamponade secondary to brodifacoum toxicosis in a dog.

Hemorrhage resulting from ingestion of anticoagulant rodenticides may be evident at any traumatized site or in any body cavity. It is important for clinicians to include coagulopathies among the differential diagnoses for pericardial effusion and to evaluate clotting function before routine pericardiocentesis is performed.