The near-death signs of parvo include severe lethargy, continuous bloody diarrhea, anorexia, and bloody vomiting.
Most puppies and adults with parvovirus test positive within 4 to 5 days of exposure.
Some of the signs of parvovirus include lethargy; loss of appetite; abdominal pain and bloating; fever or low body temperature （hypothermia）; vomiting; and severe, often bloody, diarrhea.
Pets can still be infected with parvovirus even if they are vaccinated.
Humans can’t get parvovirus from dogs, and dogs cannot get parvovirus from people.
Young and institutionally weak pets are susceptible to CPV.
It is also possible to treat dogs parvo without a veterinarian, and you need to buy some medications for treatment.
you can test a dog for parvo at home by antigen test, it is easy to operate.