Dog regurgitation refers to parvovirus. The main symptoms include vomiting, diarrhea, poor energy, loss of appetite, blood in the stool, difficulty breathing, heart failure, etc. If the dog shows these symptoms, it is best to send it to the hospital for examination and treatment immediately. . To prevent dogs from being infected with parvovirus, you need to vaccinate them on time, avoid contact with other infected dogs, and try not to take your dog out or bathe your dog before being vaccinated.