suddenly bloody diarrhea in dogs

There are many causes for suddenly bloody diarrhea in dogs. Conditions such as hemorrhagic gastroenteritis, infectious enteritis, intestinal trauma, parasite infections, and acute pancreatitis may all cause sudden bloody diarrhea in dogs. There is some overlap in the clinical symptoms of different diseases, such as bloody stools. As the situation is quite severe for dogs, it is recommended to bring them to a pet hospital for further examination and treatment.

First consider hemorrhagic gastroenteritis, which is caused by bacterial infections. The main clinical symptoms are diarrhea, black or dark green stools, and a bloody smell when the small intestine bleeds. If the large intestine bleeds, the stool surface may be covered with blood threads or clots.

Next, consider infectious enteritis, which is mainly caused by canine parvovirus and canine coronavirus infections. Early symptoms include loss of appetite and soft stools. As the disease progresses, severe vomiting and diarrhea will occur, and the vomit may contain mucus, blood, and other substances. The diarrhea is tomato sauce or soy sauce-like bloody stools.

Then consider intestinal trauma, mainly caused by accidentally eating sharp animal bones or metal objects. When the condition is severe, it can cause bloody stools, significant bleeding, and even intestinal perforation, which can lead to secondary peritonitis and other diseases.

Also consider parasite infections, such as coccidia infections. If the symptoms are severe, diarrhea and bloody stools at the end of the stool can occur.

Finally, consider acute pancreatitis and other digestive system diseases. Acute pancreatitis is a non-inflammatory disease caused by premature activation of pancreatic juice, which then digests pancreatic tissue. Clinical symptoms include upper abdominal pain, diarrhea, bloody stools, and vomiting. The causes of acute pancreatitis are mainly related to improper diet, trauma, and secondary symptoms of certain diseases.