Dogster is reader-supported. When you buy via links on our site, we may earn a commission at no cost to you. Learn more.

Ask the Vet

My Dog Swallowed a Corn Cob: Our Vet Explains Signs, Next Steps & Prevention Tips

Dr. Samantha Devine
Written and fact-checked by Dr. Samantha DevineVet Approved
Dr. Samantha Devine
Reviewed & Fact-Checked byDr. Samantha DevineDVM (Veterinarian)
Dr. Samantha Devine is a practicing veterinarian who enjoys caring for animals and sharing her knowledge with pet owners. Preventative care, ranging from nutrition to vaccination, is her specialty and passion!View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Learn more
Updated on June 17, 2026
Share
Corn Cob Waste

You had company over for a barbecue, and your furriest family member stole an ear of corn on the cob from someone's plate. Is it going to be a problem? If so, what do you do when your dog eats a corn cob?

Dogster divider_v3_NEW_MAY_24_

What to Do if Your Dog Ate a Corn Cob

Start by taking a deep breath. If your dog ate a corn cob, get them away from anything else they might be trying to gobble down. Check to ensure they aren’t choking and call your veterinarian immediately.

Why Is It Dangerous for Your Dog to Eat a Corn Cob?

If your dog eats a corn cob, they need to be evaluated by a veterinarian immediately. Corn cobs are relatively indigestible and quite rigid. They can get lodged in your dog's stomach and intestines. The corn cob could get stuck in your dog's esophagus, posing a serious choking hazard. When an object or potential food material gets stuck in your dog's gut, it prevents normal digestive processes, so your dog misses out on vital nutrients. That's only one potential problem with a foreign body.

If your dog has an obstruction, the material puts pressure on the walls of your dog's stomach or intestines. The blood flow might decrease, and the tissue can even die and become necrotic. In some cases, the intestines can perforate, leading to peritonitis and sepsis as possible sequelae.

Dogster divider_v3_NEW_MAY_24_

Signs That Your Dog Might Have Eaten a Corn Cob

Image Credit: Yavdat, Shutterstock

If your dog ate a bit of corn, they likely won't have any issues with the kernels of corn themselves. After all, corn is found in many pet foods. The cob is the issue here. It can cause an intestinal obstruction.

Signs of a GI foreign body include:

  • Vomiting
  • Diarrhea
  • Constipation
  • Lack of appetite
  • Abdominal pain
  • Restless behavior
  • Weakness
  • Lethargy

Some dogs have a partial obstruction rather than a complete one. They might have signs that occur occasionally over several days instead of abruptly.

Dogster divider_v3_NEW_MAY_24_

What Will Your Vet Do if Your Dog Eats Corn on the Cob?

At your dog's vet appointment, your vet will start by examining your dog. The vet will carefully palpate your dog's abdomen to check for changes. They might even feel the corn cob. You should tell your vet anything your dog might have eaten now.

Your veterinarian may run blood work to evaluate your dog metabolically. The vet will likely take radiographs for an obstructive pattern or obvious foreign body. They might give a barium contrast product to check for food passage through your dog's intestines.

If the corn cob was just swallowed and your vet has an endoscope, the veterinary team may anesthetize your dog and pass this long, flexible camera into your dog's stomach to attempt to grab and pull out the cob. It's important to note that this method, while less invasive than an exploratory surgery, could fail. The endoscope might not be able to remove the corn cob securely, your veterinarian could lack experience with the tool, or the cob could be too far past the stomach for the endoscope to reach it.

Image Credit: Maria Sbytova, Shutterstock

Your veterinarian might need to perform an exploratory surgery to open the stomach or intestines and remove the cob. If parts of the intestines are damaged, your veterinarian might be to perform a resection and anastomosis. During this procedure, your veterinarian would remove the damaged section of the bowel and suture the remaining healthy tissue together.

If everything goes well with surgery, your dog should have an average post-op recovery. Your dog must wear an Elizabethan collar (e-collar) for ten to fourteen days. In addition to pain medication, your dog might need antibiotics, anti-nausea medication, or even metoclopramide to help with gut motility.

Your veterinarian might also need to treat your dog for secondary issues relating to eating the corn. If your dog ate the corn cob, could he have eaten something else: onions, ham, or even moldy old food? These foods can be quite dangerous and lead to issues like pancreatitis, anemia, or even tremors or seizures.

Dogster divider_v3_NEW_MAY_24_

Preventing Your Dog From Eating Corn Cobs

They say an ounce of prevention is worth a pound of cure. You should keep corn cobs and other "people foods" away from your pup.

  • Keep trash in a secured bin your dog would have trouble getting into.
  • Ensure guests and family members don't offer food off their plates.
  • Offer plenty of enrichment to help reduce boredom-driven behaviors.
Dogster divider_v3_NEW_MAY_24_

Conclusion

If your dog ate a corn cob, he needs to be seen by a veterinarian immediately. Because they are hard and indigestible, your veterinary team will usually need to remove the cob via an endoscope or exploratory surgery.

Sources

Featured Image Credit: Nanda Kurniawan Nugroho, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

Dr. Samantha Devine DVM (Veterinarian)
Authored by

Dr. Samantha Devine DVM (Veterinarian)

How Long Will a Corn Cob Stay in My Dog’s Stomach? Vet-Approved Facts

How Long Will a Corn Cob Stay in My Dog’s Stomach? Vet-Approved Facts

You’re having a barbecue, and suddenly, you notice that your dog has scoured through the leftovers on a plate that somebody dropped on the ground. You realize…

Brooke Billingsley
By Brooke Billingsley · 1 week ago
Can Dogs Eat Corn? Vet-Reviewed Facts & Nutritional Benefits

Can Dogs Eat Corn? Vet-Reviewed Facts & Nutritional Benefits

Corn is a ubiquitous ingredient that shows up in all sorts of things, including dog food. This makes many people believe that corn is completely safe for dogs.…

Grant Piper
By Grant Piper · 1 week ago
My Dog Ate a Toothpick: Should I Be Worried? Our Vet Answers

My Dog Ate a Toothpick: Should I Be Worried? Our Vet Answers

Has your dog eaten a toothpick? This is a surprisingly common occurrence, and your vet will be well-equipped to deal with this situation. It is extremely dange…

Dr. Emma Chandley BVM
By Dr. Emma Chandley BVM · 1 week ago
My Dog Ate Plastic: Should I Be Worried? (Vet Answer)

My Dog Ate Plastic: Should I Be Worried? (Vet Answer)

You've just gotten home and found trash strewn throughout your living room. The kitchen trash can is on its side, and your pooch looks guilty. You panic: shoul…

Dr. Samantha Devine
By Dr. Samantha Devine · 2 weeks ago

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.

You may opt-out at any time. View our Privacy Policy for more information.

The Dogster app on a phone