Parvovirus can cause respiratory and / or heart failure but the most common symptom associated with parvo is the intestinal form which causes vomiting
with severe bloody diarrhea.
Hemorrhagic Gastroenteritis is characterized by the sudden onset
of severe bloody diarrhea, (sometimes explosive), vomiting, low blood volume due to fluid and electrolytes moving into the intestines.
In the past I thought someone poisoned my almond milk because I had
severe bloody diarrhea and would sweat profusely.
Severe bloody diarrhea is the one common clinical symptom they share.
The major symptoms of CPV are
severe bloody diarrhea, fever, vomiting, lethargy, anorexia and eventually, severe weight loss.
If your dog has
severe bloody diarrhea, or is showing more generalized signs of illness such as weakness, fever, vomiting, abdominal pain or loss of appetite, or if dehydration accompanies the diarrhea, the cause may be more serious.
Parvovirus typically causes vomiting and
severe bloody diarrhea.