There is no saying that dogs with parvovirus usually die at night. The specific time of death depends on the disease of the dog. Dogs with parvovirus are mostly caused by infectious diseases and dietary diseases. Among them, the probability of infectious diseases is the highest. The disease will begin in 3-5 days after infection, and death will be accelerated without treatment. Therefore, when a dog is found to have abnormal conditions, it should be sent to the pet hospital for treatment in time to avoid delaying the condition and causing life-threatening consequences.