08/04/2025
SUMMER FOREIGN BODY HAZARDS IN DOGS: The Hidden Danger of Corn Cobs
Summer is a season of outdoor gatherings, cookouts, and fun in the sun—but for dogs, it can also be a season of unexpected medical emergencies. One of the most common and dangerous problems veterinarians see during the warmer months is the ingestion of foreign bodies, especially corn cobs. In the past 10 days we have taken three patients to surgery for this issue!
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Corn Cobs: A Summertime Hazard
Corn on the cob is a staple of summer barbecues, but once the kernels are gone, the leftover cob becomes a serious danger—especially to curious dogs. Many pet owners don’t realize that corn cobs are one of the most frequently removed foreign objects from dogs’ intestines in emergency surgeries.
Why Are Corn Cobs So Dangerous?
• Indigestible: Corn cobs don’t break down in the digestive tract. If swallowed, they can remain intact and travel into the intestines, where they can cause a blockage.
• Just the right size: Their cylindrical shape makes them perfect for getting stuck in the stomach or small intestine, particularly in medium- to large-sized dogs.
• Delayed symptoms: A dog may seem fine initially, but symptoms can take 24 to 72 hours to appear—often when the obstruction has become severe.
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Symptoms of a Corn Cob Obstruction
If your dog has eaten a corn cob, you may notice:
• Vomiting (often repeatedly)
• Lethargy
• Loss of appetite
• Abdominal discomfort or bloating
• Straining to defecate or no bowel movements
These symptoms warrant immediate veterinary attention. Obstructions are painful, can restrict blood flow, and may require emergency surgery to resolve.
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Other Common Summer Foreign Bodies
Corn cobs aren’t the only threat. During summer festivities, dogs may also ingest:
• Skewers and kebab sticks – can puncture internal organs
• Peach and plum pits – potential for choking or intestinal blockage
• Bones (especially cooked) – splinter easily and can cause perforations
• Aluminum foil or food wrappers – may contain food residue and lead to obstruction
• String or twine from meat – can act as a “linear foreign body,” cutting through intestines
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Tips to Prevent Foreign Body Ingestion
• Dispose of food waste securely. Keep trash in covered, dog-proof bins.
• Don’t leave plates unattended. Dogs are opportunists!
• Ask guests not to feed your dog. Well-meaning visitors might hand over dangerous scraps.
• Supervise during cookouts. If your dog likes to scavenge, consider keeping them indoors or crated during meals.
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When in Doubt, Call Your Vet
If you suspect your dog may have eaten something they shouldn’t—especially a corn cob—don’t wait. Prompt treatment is essential to avoid complications like intestinal rupture or infection. Your veterinarian may recommend x-rays or an ultrasound to determine if an object is stuck.
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Final Thoughts
Summer should be a time of joy, not emergency vet visits. By staying vigilant and keeping items like corn cobs out of reach, you can help your dog stay safe while enjoying the season.
If you have questions or concerns, contact Olney-Sandy Spring Veterinary Hospital—your other family doctor.