Bloat in dogs is an emergency.

It happens when a dog’s stomach fills with gas, fluid, or food and swells. In the most dangerous form, gastric dilatation-volvulus (GDV), the swollen stomach also twists on itself. That cuts off its blood supply and traps everything inside. A dog with GDV can die within hours without surgery.

If you think your dog has bloat right now, stop reading and call us at (713) 682-6351. After hours, go to the nearest emergency hospital. Don’t wait to see whether it passes.

Key takeaways

• Bloat is not the same as a dog with a full belly. It is a medical emergency, and GDV (a twisted stomach) needs surgery.
• The classic signs are a swollen, hard belly, retching that brings nothing up, drooling, restlessness, and pale gums.
• Large, deep-chested breeds such as Great Danes, German Shepherds, Standard Poodles, Dobermans, and Weimaraners are most at risk. Any dog can bloat.
• Smaller, more frequent meals, slower eating, and rest after meals help lower the risk.
• For high-risk breeds, a preventive surgery called a gastropexy can stop the stomach from twisting.

What is bloat in dogs?

Bloat starts when the stomach swells with gas, food, or fluid. Veterinarians call this gastric dilatation. Sometimes it stays at that stage. In other dogs, the stretched stomach rotates, which is called volvulus. The full condition is gastric dilatation-volvulus, or GDV.

When the stomach twists, the gas can’t escape through burping or vomiting. Pressure builds, blood flow to the stomach wall and spleen drops, and the swollen stomach presses on the large veins that return blood to the heart. Dogs can go into shock quickly.

People sometimes say “bloated” after a big dinner, and it’s easy to assume the same thing in a dog. It isn’t the same. In our newsletters over the years we’ve said it plainly, and it’s worth saying again: bloat affects a dog’s body far more seriously than it affects ours.

What are the signs of bloat in a dog?

The signs of bloat usually come on suddenly, often within a few hours of a meal. Watch for:

• A swollen stomach that feels tight or hard, like a drum
• Retching or trying to vomit with little or nothing coming up
• Heavy drooling
• Pacing, restlessness, or trouble getting comfortable
• Looking at or guarding the belly, or standing with the front legs down and back end up
• Rapid, shallow breathing or heavy panting
• Pale gums and lips
• Weakness, collapse, or a racing heartbeat as shock sets in

Early on, a dog may only seem anxious and restless. As GDV progresses, that restlessness often turns into listlessness and fatigue, which is a sign the dog is getting worse, not better.

Unproductive retching in a large-breed dog should always be treated as possible bloat until a veterinarian says otherwise.

Which dogs are most at risk of bloat?

Large and giant breeds with deep, narrow chests have the highest risk. These include:

• Great Danes
• German Shepherds
• Standard Poodles
• Doberman Pinschers
• Saint Bernards
• Mastiffs
• Weimaraners
• Irish Setters and Gordon Setters
• Akitas and Bloodhounds

The risk in some breeds is striking. A large Purdue University study estimated that about 4 in 10 Great Danes will develop GDV at some point in their lives.

Other risk factors identified by the American College of Veterinary Surgeons (ACVS) and other researchers include:

• Age: risk rises as dogs get older
• Family history: dogs with a parent or sibling that had GDV are at higher risk
• One large meal a day rather than two or three smaller meals
• Eating very fast and gulping air
• An anxious or fearful temperament
• Lower body weight for the breed (lean, deep-chested dogs)

Small dogs can bloat too. It is much less common, but if your small dog shows the signs above, treat it as an emergency anyway.

What causes bloat in dogs?

There’s no single cause. Bloat seems to happen when several risk factors line up. Eating quickly and swallowing air, drinking a large amount of water around meals, and vigorous exercise right after eating are all thought to play a part. A dog’s breed, chest shape, and genetics set the stage.

How do vets diagnose and treat GDV?

When a dog arrives with suspected bloat, the first job is to stabilize them. That usually means:

1. Treating shock with intravenous fluids and pain relief.

2. Taking an X-ray to see whether the stomach has twisted. GDV has a recognizable look on a radiograph. Our diagnostics service covers the imaging and bloodwork these cases need.

3. Relieving the pressure by passing a stomach tube or placing a needle through the skin to release gas.

4. Surgery for GDV. The surgeon returns the stomach to its normal position, checks the stomach wall and spleen for damage, and then performs a gastropexy, which stitches the stomach to the body wall so it can’t twist again.

Dogs with simple bloat (dilatation without a twist) may not need surgery, but they still need prompt veterinary care and close monitoring.

Can a dog survive bloat?

Yes. Many dogs survive bloat, especially when treatment starts early. Published studies put the death rate in treated dogs anywhere from about 6% to 33%. The outlook gets worse the longer the stomach stays twisted, because the stomach wall and other organs begin to die. Speed is the one factor you control.

Recovery after GDV surgery usually means a few days in the hospital with monitoring for heart rhythm problems, which are common after this surgery. Most dogs then go home to a gentle diet and restricted exercise while they heal.

How can I prevent bloat in my dog?

You can’t remove every risk, but these steps help:

• Feed two or three smaller meals a day instead of one large one.
• Slow down fast eaters with a slow-feeder bowl or a puzzle feeder.
• Don’t let your dog drink large amounts of water right before or after a meal. Fresh water should always be available, just not gulped by the bucketful at dinnertime.
• Rest after meals. Skip the run, the game of fetch, or the trip to the dog park for at least an hour after eating.
• Keep mealtimes calm. If you have more than one dog, feed them apart so nobody feels they have to race.
• Ask about food bowl height. Raised bowls were once recommended for large dogs, but some research has linked them to a higher risk of GDV, and the evidence is mixed. Talk with us before you switch.

Our team is happy to help you plan a feeding routine for a large or giant-breed dog. See our pet nutrition service to learn more.

Should my dog have a preventive gastropexy?

A preventive (prophylactic) gastropexy is a surgery that attaches the stomach to the body wall before any problem happens. It doesn’t stop the stomach from filling with gas, but it does prevent the life-threatening twist. Veterinary surgeons generally recommend considering it for high-risk breeds and for dogs whose close relatives have had GDV.

It is often done at the same time as a spay or neuter, so your dog only needs anesthesia once. If you share your home with a Great Dane, Standard Poodle, German Shepherd, or another high-risk breed, ask us whether it makes sense for your dog. Learn more about our surgery and anesthesia service.

What should I do if I think my dog has bloat?

1. Call us right away at (713) 682-6351, or head straight to the nearest emergency hospital if we’re closed. Our emergency page has more guidance.

2. Don’t give food, water, or medication while you wait.

3. Don’t try home remedies or wait to see if burping helps. GDV doesn’t resolve on its own.

4. Drive carefully, but go now. Every hour matters.

Frequently asked questions about bloat in dogs

How fast can bloat kill a dog?

GDV can become fatal within a few hours. Some dogs go into shock within an hour or two of the first signs. That’s why any dog with a swollen belly and unproductive retching needs to be seen immediately.

Can a dog with bloat still poop or pass gas?

Sometimes, yes, especially early on. Passing stool or gas doesn’t rule out bloat. The retching, drooling, restlessness, and swollen belly matter more.

Will a dog with bloat still eat?

Usually not. Most dogs with bloat lose interest in food and may retch if they try to eat or drink. Don’t offer food if you suspect bloat.

Does wet food or dry food cause bloat?

No single food type has been proven to cause bloat. How a dog eats seems to matter more than what they eat. Eating one large meal a day and eating very fast are the bigger risks. Ask us before making major diet changes for a high-risk dog.

Is a gastropexy worth it?

For high-risk breeds, many veterinary surgeons think so. The surgery prevents the stomach from twisting, which is the part of bloat that makes it so deadly. We can talk through the costs, benefits, and timing for your dog.

We’re here when it matters

Bloat is frightening, but knowing the signs means you can act fast. If you have a large or deep-chested dog, keep our number handy: (713) 682-6351. You can also book an appointment online to talk about feeding routines, risk, or preventive gastropexy before an emergency happens.

Oak Forest Veterinary Hospital, 2120 West 34th Street, Houston, TX 77018

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Sources

• American College of Veterinary Surgeons: Gastric Dilatation-Volvulus
• Glickman LT, et al. Incidence of and breed-related risk factors for gastric dilatation-volvulus in dogs. JAVMA, 2000.
• Glickman LT, et al. Non-dietary risk factors for gastric dilatation-volvulus in large and giant breed dogs. JAVMA, 2000.