Why corn cobs are the object we most want you to call about
Of everything dogs swallow, the corn cob is the one most likely to end in surgery. It is not even close.
A cob is fibrous and dense, so the stomach cannot break it down. It is roughly cylindrical and usually two to four inches long, which is small enough to leave the stomach and far too big to pass through the small intestine. It travels a little way and then stops completely.
Summer and early fall bring a predictable rise in cob cases from Talleyville backyards, and our foreign body removal surgery team sees it every year from June through October.
Assume surgery. Call the same day.
Unlike a small toy or a scrap of fabric, a corn cob has almost no realistic chance of passing. Waiting to see rarely changes the outcome and often makes the surgery harder.
What happens inside
Once wedged, the cob blocks the gut completely. Nothing gets past, so vomiting starts as the stomach tries to empty itself. Fluid backs up, your dog becomes dehydrated, and electrolytes slip out of balance.
At the same time, the cob presses against the bowel wall from the inside. That steady pressure reduces the blood supply to that section, and given long enough the tissue dies. Dead bowel cannot simply be opened and stitched. It has to be removed and the healthy ends rejoined, which is a longer and riskier operation.
Here is how it often plays out. A family in Sharpley holds a Labor Day cookout. A cob drops off a paper plate onto the lawn, and the beagle finds it under a chair within seconds. Nobody notices until the next morning, when she vomits her breakfast and then a bowl of water. By lunchtime she will not leave her bed. Her owner calls us at that point, and X-rays that afternoon show a classic obstruction pattern in the small intestine. Because the cob has been there less than 24 hours, the bowel wall is still pink and healthy, and a single enterotomy solves the problem. She is home the next evening.
The signs
Symptoms usually begin within 12 to 24 hours:
- Repeated vomiting, including bringing water back up
- Refusing food completely
- Lethargy, hiding, or reluctance to move
- Straining to pass stool with nothing coming out
- A hunched posture or a tense, painful belly
- Drooling or repeated swallowing
Never induce vomiting after a corn cob. A cob coming back up can tear the esophagus, which is a far more dangerous injury than an intestinal blockage. Call us first.
Will it show on an X-ray?
Partly. Corn cobs are not as radiopaque as bone or stone, so they can be hard to see directly. What the surgeon reads instead is the obstruction pattern: gas building up behind the blockage, swollen loops of intestine, and a sudden change in bowel diameter.
That pattern is clear to anyone who reads abdominal films regularly. If it is ambiguous, abdominal ultrasound settles it, and a cob’s dense fibrous core has a recognizable appearance on ultrasound.
The surgery and what it costs
Removal starts at $1,200. That includes the pre-op radiographs, pre-anesthetic bloodwork, IV fluids, anesthesia with continuous SpO2, ECG, blood pressure, and temperature monitoring, the procedure, and post-operative medications.
Most cobs come out through an enterotomy, a small incision in the affected loop of intestine just beyond the object where the tissue is healthiest. The surgeon then checks the entire gut by hand, because a dog who got one cob off the plate has often had two.
Emergency hospitals commonly quote $3,000 to $5,000 for the same procedure.
Right now
If your dog is collapsing, cannot keep water down, or has a rigid, painful belly, go to the nearest emergency hospital first for stabilization.
Otherwise, contact us now or call Talleyville Dog Surgery on (302) 599-0299 with your dog’s breed and weight, roughly when the cob was eaten, and what you are seeing. These are priority calls, and urgent cases are booked within days, or the same day when the situation is time-critical.
And for next summer: plates go straight to the kitchen, trash cans get lids, and someone walks the yard before the dog goes back out.