What Causes Indigestion in Dogs and How to Settle It

Name: What Causes Indigestion in Dogs and How to Settle It
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-03

Indigestion in dogs is usually a mild, short-lived upset linked to something your dog ate, a sudden diet change, or a passing stomach bug. Most cases settle within a day or two with rest and gentle feeding. What causes dog indigestion can also be a more serious problem, so knowing the red flags matters.

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

Most mild indigestion in dogs comes from dietary indiscretion (eating table scraps, garbage, or something new), a rapid food change, or a mild intestinal infection.
Signs owners notice most often are stomach gurgling, burping, drooling, lip licking, and vomiting after eating.
Withhold food only briefly if your vet advises it. Current guidance favors early nutrition once vomiting has stopped for 12 to 24 hours [1].
Call your vet the same day if vomiting is repeated, your dog seems painful, or blood appears in vomit or stool.
Go to an emergency clinic now if your dog has a bloated, hard belly, unproductive retching, collapse, or trouble breathing.

What Dog Indigestion Actually Means

Indigestion is not a formal diagnosis. It is a catch-all word owners use for the cluster of signs that point to stomach or upper intestinal irritation. Vets describe the same picture as acute gastritis, gastroenteritis, or simply an upset stomach.

The stomach and upper small intestine are the main players. When they are irritated, they can push contents upward. Vomiting is the forceful ejection of stomach and upper intestinal contents, and it is usually preceded by nausea, drooling, retching, and strong abdominal contractions [2].

That is different from regurgitation, which is passive. Regurgitated food tends to be undigested and may keep a cylindrical shape from the esophagus, and it is more often tied to coughing or breathing trouble than to true vomiting [2].

Dog Indigestion Symptoms Owners Notice

Signs range from subtle to obvious. Mild cases often look like this:

Stomach gurgling (borborygmi) that you can hear across the room
Burping, lip licking, and swallowing more than usual
Drooling or nausea without producing vomit
Eating grass, then vomiting
Vomiting after eating, sometimes within minutes
Soft stool or a single loose bowel movement
Picking at food or skipping one meal

More concerning signs include repeated vomiting, vomiting that continues past 24 hours, blood in vomit or stool, a painful belly when touched, lethargy, and weight loss. Long-term or repeated vomiting can lead to weakness, lethargy, weight loss, dehydration, and electrolyte imbalance [2].

If your dog's belly looks swollen or feels tight, that is a different problem. See What Would Cause A Dogs Stomach To Swell and Why Is My Dog's Stomach So Bloated And Hard.

What Causes Dog Indigestion?

Causes split into two groups: things your dog ate, and things going on inside the body.

Dietary Causes

Sudden food change without a gradual transition
Table scraps, fatty or greasy food, or spicy food
Garbage, compost, or spoiled food
Bones, toys, or other foreign material
Food intolerance or a sensitive stomach
Overeating in one sitting
Eating too fast, which traps air and causes burping and gurgling

Bad gas often travels with indigestion. If that is your main complaint, read Why Does My Dog Have Bad Gas?.

Medical Causes

Vomiting in dogs can stem from many disorders, including digestive system disease, kidney or liver failure, pancreatitis, nervous system disorders, and ingestion of irritating substances or poisons [2].

Infectious causes matter too. Canine enteric viruses are an important cause of gastrointestinal disease in pet dogs worldwide, and testing often misses some of them because routine PCR panels do not detect every virus [3].

Structural problems are rare but real. One case report described a 9-year-old neutered male Toy Poodle with a true gastrogastric intussusception, where part of the stomach folded into itself. The dog had vomiting, blood in the stool, and decreased activity, and imaging plus endoscopy confirmed the diagnosis [4].

Parasites, tick-borne illness, and toxin exposure can also trigger vomiting. In one study of dogs with tick paralysis, vomiting and regurgitation were common enough to be tracked as clinical signs [5].

Risk Factors

Dogs who scavenge or get into trash
Dogs on frequent diet changes
Young puppies and senior dogs
Dogs with known food sensitivities
Dogs with underlying organ disease
Dogs on certain medications, including some cancer drugs

How Veterinarians Diagnose the Problem

Your vet starts with history. They will ask what your dog ate, when vomiting started, how often it happens, and whether the stool has changed.

The physical exam checks hydration, belly pain, gum color, and temperature. From there, testing depends on how sick your dog looks.

Common next steps:

Blood work to check organ function, electrolytes, and infection markers
Fecal testing for parasites and viruses
X-rays for foreign objects or bloat
Ultrasound for stomach wall thickening, masses, or unusual anatomy
Endoscopy in selected cases to look inside the stomach directly

Imaging is often the fastest route to answers. In the intussusception case, abdominal ultrasound identified thickening of the gastric wall and the abnormal folding, and CT confirmed it before endoscopy [4]. Early ultrasound diagnosis made a big difference in that dog's outcome [4].

Treatment Options

Treatment targets the cause and supports the gut while it recovers. Whenever possible, vomiting is controlled by identifying and eliminating the cause while allowing the digestive system time to recover [2].

Home Care for Mild Cases

Follow your veterinarian's instructions for your pet's diet. It was once thought that food and water should be withheld until vomiting stopped. We now know that providing nutrition earlier is linked to earlier improvement, weight gain, and better gut function [1].

Once vomiting has stopped for 12 to 24 hours, small, frequent amounts of a bland diet (such as cottage cheese and rice, or a prescription diet) can be slowly introduced [1]. If signs come back after feeding, call your vet for directions [1].

If food is tolerated, the bland diet is usually continued for 1 or 2 weeks, then the regular diet is gradually reintroduced [1].

Veterinary Treatment

Anti-nausea medication, dosed by your vet based on weight and health status
Fluids under the skin or into a vein for dehydration
Prescription gastrointestinal diets
Deworming or antiviral support when indicated
Feeding tubes for dogs that will not eat on their own [1]
Endoscopic or surgical treatment for structural problems

In the intussusception case, the folded stomach tissue was reduced endoscopically using insufflation, with no surgery needed, and the dog stayed free of recurrence through day 216 [4].

A Simple Comparison

Situation	Typical Approach	When to Call the Vet
One vomit, still playful	Rest, small bland meals after 12 to 24 hours [1]	If it happens again
Gurgling and burping, no vomit	Small meals, slow feeding, bland diet	If it lasts more than 24 hours
Vomiting after every meal	Bland diet trial, vet exam	Same day
Repeated vomiting, lethargic	No food or water by mouth until seen	Emergency now
Bloated hard belly, retching	Do not wait	Emergency now

Recovery, Outlook, and Long-Term Management

Most mild cases improve within 24 to 48 hours. The gut needs time, and pushing food too fast often brings the signs back.

Expect a gradual return to normal. Start with small bland meals, then stretch the time between meals as your dog holds food down. If your dog tolerates the bland diet, keep it going for 1 to 2 weeks before transitioning back to regular food [1].

Long-term management depends on the cause. Dogs with food sensitivity may need a permanent diet change. Dogs with chronic gastritis or inflammatory disease may need ongoing medication and monitoring. Dogs with organ disease need treatment for the underlying condition.

Some dogs need a feeding tube if they will not eat on their own, which vets use to deliver nutrition early and support recovery [1].

Watch for patterns. If your dog gets indigestion every time they eat a certain food or scavenge, the fix is management, not repeated treatment. Bad breath that comes with stomach issues can be another clue. See Dog Bad Breath Caused By Stomach.

Prevention

You cannot prevent every upset stomach, but you can lower the odds.

Keep trash, compost, and food scraps out of reach
Avoid table scraps and fatty human food
Transition to new food over 7 to 10 days, mixing old and new
Use a slow-feeder bowl if your dog eats too fast
Keep up with parasite prevention
Store food properly and check expiration dates
Stick to a consistent feeding schedule
Ask your vet before giving any human medication

If your dog has repeated bouts, keep a simple log of what they ate and when signs started. That record helps your vet find the trigger faster.

Limitations and When to Contact a Veterinarian

Home care has limits. If signs do not improve, or if your dog gets worse, stop guessing and call your vet. Individual cases need a veterinarian to examine your dog and set the right plan.

Call your vet the same day if:

Vomiting happens more than 2 or 3 times in a day
Your dog refuses all food for more than 24 hours
Diarrhea lasts more than 24 hours
You see blood in vomit or stool
Your dog seems painful when you touch the belly
Your dog is lethargic or not acting like themselves

Go to an emergency clinic now if:

The belly is bloated, hard, or distended
Your dog retches without producing anything
Your dog collapses or has trouble breathing
You suspect your dog ate a toxin, medication, or foreign object
Your dog is a puppy, senior, or has a chronic illness and is declining fast

For poison exposure in the United States, call the ASPCA Animal Poison Control Center at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661. These lines may charge a consultation fee.

Frequently Asked Questions

How long does dog indigestion usually last?

Most mild cases settle within 24 to 48 hours with rest and gentle feeding. If signs last longer than a day or two, or keep coming back after meals, your dog needs a veterinary exam.

Can I give my dog human antacids for an upset stomach?

Do not give human medication without asking your vet first. Doses for dogs are calculated by your veterinarian based on your dog's weight and health, and some human drugs are toxic to dogs.

Why does my dog's stomach gurgle so loudly?

Gurgling usually means gas and fluid are moving through the gut, which happens with mild irritation, eating too fast, or an empty stomach. If gurgling comes with vomiting, pain, or lethargy, call your vet.

Is it safe to withhold food when my dog is vomiting?

Only briefly, and only if your vet advises it. Current guidance supports early nutrition once vomiting has stopped for 12 to 24 hours, because feeding sooner is linked to earlier improvement and better gut function [1].

When should I worry about vomiting after eating?

Worry if it happens after every meal, if your dog seems painful, or if vomiting is repeated or contains blood. A single episode in a bright, playful dog is usually not urgent, but a pattern needs a vet visit.

References

Disorders of the Stomach and Intestines in Dogs - Dog Owners. Merck Veterinary Manual.
Vomiting in Dogs - Dog Owners. Merck Veterinary Manual.
Expanded detection of canine enteric viruses in UK dogs with diarrhoea. Microbial genomics, 2026.
Endoscopic reduction of true gastrogastric intussusception in a dog. Journal of veterinary internal medicine, 2026.
Prevalence and significance of vomiting and regurgitation in dogs with tick paralysis caused by Ixodes holocylus. Australian veterinary journal, 2025.