Dog Flu 2024 Symptoms. Acute pneumonia that rapidly becomes severe and often leads to poor outcomes in as little as 24 to 36 hours. It is really important when your dog is sick and has diarrhea to make sure that they are drinking enough water.
Canine influenza (also known as dog flu) is a contagious respiratory disease caused by type a influenza viruses that are known to affect canines. Most dogs recover in a few weeks, but more severe cases need veterinary care.