Dogs with upset stomachs
If your dog is intermittently vomiting or has persistent diarrhea greater
than three days, you should talk to your veterinarian about their
recommendations. If they're comfortable based upon your dog otherwise acting
fine, one strategy would be to skip a meal or two. A 12 to 24 hour fast will
often give the bacteria within the digestive system a break so that it can
reset itself. You can then gradually reintroduce the food by giving a half meal
at a time.