Hemorrhagic gastroenteritis is an acute condition of dogs characterised by the sudden onset of severe bloody vomiting and explosive bloody diarrhea. Large amounts of fresh blood are passed in the vomit and diarrhea, leaving the animal weak, depressed, and reluctant to eat. As the disease progresses, pets rapidly deteriorate, becoming shocked and collapsed. This is a life-threatening situation that requires immediate treatment. The mortality rate is high for dogs that go untreated.