My Dog's Stomach Looks Bloated: Could It Be GDV?

A bloated or distended abdomen in a dog is always worth investigating. While some causes are relatively benign, such as intestinal gas or overeating, the most serious cause, Gastric Dilatation-Volvulus (GDV), is life-threatening and requires immediate emergency surgery. GDV can progress from early signs to death within hours. When in doubt, act immediately.

Is This an Emergency?

Go to a vet or emergency clinic immediately if your dog:

• Has a visibly distended abdomen alongside repeated unproductive retching (attempting to vomit without bringing anything up)
• Is drooling excessively and pacing or is unable to settle
• Is a large or deep-chested breed (Great Dane, German Shepherd, Standard Poodle, Weimaraner, Irish Setter)
• Has pale, white, or blue gums
• Has collapsed or appears to be in severe pain

Do not wait and see. GDV is fatal without immediate surgical intervention.

Call your vet urgently if:

• Your dog's abdomen is visibly larger than normal but they are not yet showing acute distress
• Your dog ate a very large meal and their stomach appears unusually full and firm

What Causes a Bloated Stomach in Dogs?

Gastric Dilatation-Volvulus (GDV)

GDV occurs when the stomach fills with gas and then rotates on itself, cutting off blood supply. It is more common in large, deep-chested breeds, particularly after eating a large meal or exercising shortly after eating. This is always a surgical emergency.

Simple gastric dilatation (without volvulus)

The stomach fills with gas without rotating. This is less immediately life-threatening than GDV but still requires prompt veterinary attention as it can progress to GDV.

Ascites (abdominal fluid accumulation)

Fluid accumulating in the abdominal cavity, caused by heart disease, liver disease, or cancer, causes a pot-bellied appearance. The onset is usually gradual.

Pregnancy

An unspayed female with an expanding abdomen may be pregnant. If unplanned, discuss options with your vet.

Intestinal obstruction

A foreign body blocking the intestine causes abdominal swelling, vomiting, and pain. This is a surgical emergency.

Cushing's disease

Chronic high cortisol levels cause fat redistribution and abdominal enlargement, giving a characteristic pot-bellied appearance alongside other symptoms such as increased thirst and hair loss.

Which Breeds Are More Prone to GDV?

GDV disproportionately affects large and giant deep-chested breeds:

• Great Dane, Standard Poodle, Weimaraner, Irish Setter, Gordon Setter
• German Shepherd, Labrador Retriever, Rottweiler
• Basset Hound: despite being a smaller breed, the deep chest increases risk

Preventive gastropexy (surgically attaching the stomach to the abdominal wall) is increasingly recommended for high-risk breeds, often at the time of neutering. Ask your vet about whether this is appropriate for your dog.

What Will the Vet Do?

For suspected GDV, your vet will:

• Take X-rays to confirm the diagnosis and identify whether the stomach has rotated
• Stabilise your dog with intravenous fluids and pain relief
• Perform emergency surgery to decompress the stomach, correct the rotation, and perform a gastropexy to prevent recurrence

GDV surgery costs approximately £2,500 to £5,000 or more, depending on the severity and hospital. [VERIFY: current UK emergency surgical fee ranges] Pet insurance is strongly recommended for high-risk breeds.

How to Help Your Dog at Home

For high-risk breeds, prevention is the priority:

• Feed two or three smaller meals per day rather than one large meal
• Do not allow vigorous exercise for at least one hour before or after eating
• Use a slow-feeder bowl if your dog eats very quickly
• Discuss prophylactic gastropexy with your vet if your dog is a high-risk breed

If you see signs of GDV, do not attempt home treatment. Drive to an emergency vet immediately.