What You need to know about stomach infections in your dog: The first symptoms are usually fever and diarrhea, but the second one, usually constipation, usually follows within a week.
If you notice any of the symptoms, call your veterinarian immediately.
If your dog has a fever, ask him to stop eating and drink.
If he keeps drinking, tell him to rest and take an antibiotic.
If it becomes a fever or diarrhea-like illness, see your veterinarian.
Signs and symptoms of a stomach infection include: swelling in the stomach