The dog is not energetic enough to find a corner to sleep after vomiting. This may be caused by canine distemper, parvovirus, gastroenteritis, pancreatitis, etc. It is necessary to observe whether the dog has other abnormalities. If the dog has vomiting, diarrhea, Loss of appetite, blood in the stool, etc. may be a viral infection. It is best to send the dog to the pet hospital for examination and treatment immediately to avoid delaying the condition and causing life-threatening consequences. If there are no abnormalities, you can feed the dog some probiotics to regulate the gastrointestinal tract.