If your dog has diarrhea but otherwise acts healthy and happy, you shouldn’t worry. Withhold food for six to 12 hours and watch your pet’s condition. If the diarrhea stops, gradually reintroduce small amounts of bland food, then gradually switch them back to their normal diet. If the diarrhea doesn’t stop or your dog starts showing other signs, such as lethargy or vomiting, seek veterinary care.