Dogs suffering from parvovirus will have blood in their stools before dying, not eating or drinking, slow or rapid breathing, body twitching, and cold limbs. Parvovirus is a high-incidence acute disease in dogs. Generally, The time from illness to onset is very short, and death will occur within a short time without timely treatment. When a dog at home shows minor symptoms, it is recommended to send it to a pet hospital immediately.