There is no such thing as serious symptoms at night. If your dog has the above symptoms, it may be that the dog itself has heart or lung diseases. Parvovirus is a serious infectious disease. As the disease progresses, the dog's clinical symptoms will gradually worsen and even lead to death.

The entire course of parvovirus is about a week. The first 3 days are the early stage of the disease, and the symptoms may be mild. After the onset of the disease, 4. 5 days is when the condition is most serious and also the most critical time! It is recommended to go to the hospital for treatment as soon as possible.