Friend, typically they will pass it within 48 hours. However, some dogs may take longer. It is possible for the stocking to be obstructed in the gastrointestinal tract; this can allow food to pass through and for this reason, she continues to have bowel movements. Eventually, this can lead to inflammation in the intestines leading to necrosis (death of the tissue); when this happens is when the dog starts showing symptoms like vomiting, lethargic, anorexic, etc. This is what you can do:
1- Change her diet for the 24 hours to rice (75%) and boiled boneless chicken or ground beef (25%). The idea is for the rice to help pass the stocking in the feces.
2- If you do not see the stocking in the feces in the next 24 hours I would have her checked by your vet for x-rays with barium.
3- If at any point you see the following symptoms: lethargy, anorexia, vomiting, constipated or diarrhea, etc. follow up immediately with a veterinarian. These are all signs of a possible obstruction of the intestinal tract. In the meantime, observe her and change her diet as above then wean her back into her regular diet.
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