Dog Constantly Swallowing at Night? 9 Causes and When to Worry
Quick answer
A dog that keeps swallowing, gulping and licking its lips is most often nauseous: VCA lists lip licking, salivating and repeated swallowing as the signs that come before vomiting. The other common causes are acid reflux and esophagitis, something stuck in the esophagus (bones are the most common object), mouth or throat pain such as gum disease or tonsillitis, and nose and airway problems that make a dog snort, gag and swallow. Night-time episodes fit reflux (VCA lists restlessness at night as a sign) and empty-stomach nausea in the early morning, but the time of day alone does not prove a cause. Go to a vet now for retching that brings nothing up with a swelling belly, breathing trouble or bluish gums, or drooling with an inability to swallow. Call the same day if the gulping keeps coming back, started after chewing a bone or chew, or comes with regurgitation, appetite loss or weight loss.
Jump to
Go to a vet now: signs that cannot wait
- retches without bringing anything up, drools, stands and stretches, or the belly is getting bigger (possible bloat, GDV);
- breathes fast with the mouth open, uses its belly to breathe, stretches its neck out, breathes noisily, or has bluish gums;
- drools heavily and cannot swallow, or food and saliva come back out of the mouth and nose;
- started gulping or gagging after chewing a bone, rawhide, dental chew, stick or toy;
- may have eaten a poison, medicine or cleaning product;
- is weak or collapses.
The American College of Veterinary Surgeons lists an anxious look, standing and stretching, drooling, a distending abdomen and "retching without producing anything" as early signs of gastric dilatation-volvulus, which "requires immediate medical attention"; large, deep-chested breeds such as Great Danes, Weimaraners and St. Bernards are most at risk. Cornell's Riney Canine Health Center gives a normal resting rate of 12–30 breaths per minute and advises driving calmly to the nearest emergency hospital with the car kept cool. For a possible poison, the Pet Poison Helpline (855-764-7661 in the US) says not to give home antidotes or make your dog vomit unless a vet or the helpline tells you to.
Swallowing, retching or reverse sneezing? Name what you see
Owners call many movements "gulping", and some call recurring bouts "the gulpies", a nickname rather than a diagnosis. An exact description helps your vet more:
| What you see | What it looks like | What it usually points to |
|---|---|---|
| Repeated swallowing, lip licking, drooling | Throat moves again and again, nothing comes up | Nausea, reflux, mouth or throat pain, a stuck object |
| Vomiting | Heaving with "forceful contractions of the abdominal muscles" (VCA) | Stomach or intestinal upset, toxins, illness |
| Unproductive retching | Vomiting efforts with nothing or only foam coming up | Emergency until proven otherwise |
| Regurgitation | Food or water slides out with no heaving, often right after eating or drinking | The esophagus: reflux, a foreign body, megaesophagus, a narrowing |
| Gagging while swallowing | Tries to swallow, gags, tries again | Throat or swallowing disorder, tonsillitis, flat-faced airway |
| Reverse sneezing | Stands still, neck stretched, loud snorting inward through the nose for seconds to a minute | Irritation of the nose or back of the throat; usually harmless |
| Cough or bark change | Cough with eating or drinking, hoarse bark, noisy breathing | Laryngeal paralysis, reflux |
The Merck Veterinary Manual puts the key line simply: vomiting is active and preceded by nausea, regurgitation "is effortless and has few warning signs". If you are not sure which you saw, film the next episode.
9 causes of constant swallowing at a glance
Urgency assumes your dog breathes normally; any red flag above means "go now".
| Cause | What it looks like | How urgent | What the vet does |
|---|---|---|---|
| 1. Nausea | Lip licking, drooling, repeated swallowing, restlessness, often vomiting | Same day if it recurs or comes with other signs | Exam, diet history, blood tests or imaging as needed |
| 2. Reflux, esophagitis | Lip licking, difficulty swallowing, regurgitation, cough, restlessness at night | Book a visit; same day if not eating | Endoscopy; acid reduction and meal changes if confirmed |
| 3. Something stuck in the esophagus | Drooling, gagging, repeated swallowing attempts, food coming back; may still drink | Go now | X-rays, contrast study or endoscopy; removal by endoscope or surgery |
| 4. Mouth or dental pain | Drooling, bad breath, blood-tinged saliva, pawing at the mouth | Book a visit; same day if bleeding or not eating | Oral exam; dental treatment |
| 5. Tonsillitis, sore throat | Gagging "as if something is stuck", lip licking, refusing food at the bowl | Same or next day | Throat exam; treat the cause; antibiotics if indicated |
| 6. Nose and upper airway | Reverse sneezing, nasal discharge, noisy breathing, gagging while swallowing, bark change | Reverse sneeze: next visit; breathing trouble: go now | Nose and throat exam, laryngoscopy, imaging; surgery for some |
| 7. Megaesophagus, narrowing | Regurgitating undigested food soon after meals, weight loss, cough | Same day; now if breathing fast | X-rays, tests for causes such as myasthenia gravis; upright feeding; balloon dilation |
| 8. Swallowing disorders | Trouble picking up food, gagging while swallowing, several tries per mouthful, food out of the nose | Same day | Watching the dog eat, video X-ray (fluoroscopy); surgery for some types |
| 9. Other causes | Bloat, poison or caustic product, stress, rabies | Bloat, poison, rabies: go now | Depends on the cause |
Why does my dog keep swallowing? Each cause explained
1. Nausea
Nausea is the most common reason. VCA's vomiting guide describes it plainly: "The dog may lick its lips, salivate, and repeatedly swallow," often with restlessness, before a vomit, and a dog can feel sick without ever vomiting. VCA advises care immediately if vomiting comes with fever, lethargy, abdominal pain, diarrhea, dehydration, blood or a suspected toxin or swallowed object, and after more than one to two days even in a dog that seems well. See Patify's yellow bile action plan and the first 24 hours of dog diarrhea.
2. Acid reflux and esophagitis
In reflux, stomach acid flows back into the esophagus past the lower esophageal sphincter. VCA's sign list reads like this page's search queries: decreased appetite, difficulty swallowing, licking the lips, a change in bark, a chronic cough, discomfort and pacing or restlessness at night, plus regurgitation, especially after eating. A hiatal hernia can be behind it. The MSD Veterinary Manual names reflux, foreign bodies and occasionally drugs such as doxycycline as causes of esophagitis, links reflux to anesthesia and vomiting, and lists regurgitation, drooling, repeated swallowing attempts, pain and cough as signs. Tell your vet about recent anesthesia, tablets or vomiting.
3. Something stuck in the esophagus
The Merck Veterinary Manual lists drooling, gagging, regurgitation and repeated attempts to swallow as signs of an esophageal foreign body. Bones are the most common object, followed by needles, fishhooks, wood, rawhide and dental chew treats. Two points matter: "A partial obstruction may allow fluids but not food to pass", so drinking does not rule it out; and a stuck object can perforate the esophagus or leave a narrowing (stricture). Once diagnosed, it "should be removed immediately".
Bring the packaging or a matching piece of anything missing. Grass awns can embed in the lips and mouth (Merck; see the foxtail season guide), and string-like objects are covered in dog swallowed a tampon or pad.
4. Mouth and dental pain
The Merck Veterinary Manual notes that bad breath and drooling are common with mouth inflammation and a sore throat, that saliva may be tinged with blood, and that a dog in pain may paw at its mouth and resist an exam. Gum disease is the most common oral problem; thorns and grass awns can embed in the lips and a thread can catch under the tongue. Do not pry open a painful mouth. For prevention later, see tartar and safe brushing at home.
5. Sore throat and tonsillitis
VCA writes that throat pain "often causes the dog to gag, as if something is stuck in their throat". Dogs with tonsillitis may swallow again and again, lick their lips and walk up to the bowl but refuse to eat; most have no fever. It usually follows chronic vomiting, a chronic cough or gum disease, and a primary form occurs almost only in small breeds. Antibiotics for two to three weeks treat infection; removing the tonsils is rarely recommended.
6. Nose and upper-airway causes
Reverse sneezing (VCA): the dog "rapidly pulls air into the nose" with a loud snort for several seconds to a minute, triggered by irritation of the nose, sinuses or back of the throat such as mites, secretions, seeds or pollen. It is not harmful, and something to lick or drink may stimulate swallowing and clear the irritant. Rhinitis (MSD) brings nasal discharge, sneezing and pawing at the face; a sudden one-sided discharge suggests a foreign body. In flat-faced breeds, the ACVS notes that "some dogs will retch or gag, especially while swallowing". Laryngeal paralysis (VCA) causes a bark change, noisy breathing and gagging or coughing with eating or drinking, mostly in older Labradors, golden retrievers and St. Bernards.
7. Megaesophagus and a narrowed esophagus
Merck describes dogs with megaesophagus that "suddenly start regurgitating undigested food soon after eating and will lose weight". It can be inherited (Wire-haired Fox Terriers, Miniature Schnauzers; a family tendency in German Shepherds and Labradors) or acquired, for example with myasthenia gravis. Most affected dogs develop aspiration pneumonia, so a new cough or fast breathing is urgent. Feeding upright at 45 degrees or more is part of management, and a stricture can be stretched with a balloon catheter.
8. Swallowing disorders (dysphagia types)
A 2012 UC Davis review classifies swallowing problems by location: oral (trouble picking up food, visible by watching the dog eat), pharyngeal and cricopharyngeal (gagging, retching and several attempts per mouthful; a video X-ray tells them apart), esophageal and gastroesophageal. Aspiration pneumonia is common in these dogs. In cricopharyngeal achalasia a dog "will try to swallow and end up gagging and vomiting"; Merck puts surgical success at almost 65%. In pharyngeal paralysis, food and saliva come back out through the mouth and nose.
9. Other causes to rule out
- Bloat (GDV): unproductive retching in a restless dog with a growing belly. Emergency.
- Caustic products: a cause of esophagitis (MSD). Call first, then read the dishwasher pod guide.
- Stress: VCA notes dogs "may also drool and lick excessively when nervous", with intense yawns, pacing and panting. A trigger does not rule out a physical cause; see drooling in the car and shaking and panting.
- Rabies: drooling and an inability to swallow in the paralytic form; tell the clinic your dog's vaccination status.
Why does my dog keep swallowing at night?
This is the most searched version of the problem. Here is what veterinary sources support about the night-time pattern:
| Night-time pattern | What the source says | What to tell your vet |
|---|---|---|
| Restless, pacing, lip licking after settling for the night | VCA lists "pacing or restlessness at night" and lip licking as signs of reflux | Time of the last meal, regurgitation, cough, bark change |
| Gulping in the early morning, yellow foamy vomit, otherwise healthy | The AKC describes bilious vomiting syndrome as usually occurring "in the early hours of the morning" after a long fast; a diagnosis of exclusion | Hours between dinner and the episode |
| Snoring, gagging while swallowing, sleeping on the back | ACVS: many brachycephalic dogs with an elongated soft palate prefer to sleep on their backs, and some gag while swallowing | Breed, snoring, breathing rate asleep |
| Started the evening the dog had a chew | Merck: owners often see the animal eat the object | What was chewed, whether a piece is missing |
No source we found describes a disease that causes swallowing only at night, and a quiet bedroom simply makes swallowing easier to hear. Check daytime naps too. Do not start a bedtime snack or antacid on your own: the AKC quotes a Colorado State University veterinarian who suggests a portion of dinner as a late-night snack as the first step once bilious vomiting syndrome is diagnosed, which means after other causes are ruled out. If night episodes keep coming back, book an exam.
Dog keeps swallowing and licking lips (or licking floors)
Lip licking plus swallowing appears in VCA's sign lists for nausea, reflux, tonsillitis and stress. If your dog also licks floors, carpets or walls, a stomach problem moves up the list. In a 2012 study in the Journal of Veterinary Behavior, 19 dogs that excessively licked surfaces were compared with 10 healthy dogs: 14 of the 19 had gastrointestinal abnormalities, including inflammation of the gut lining, chronic pancreatitis and, in one dog, a foreign body in the stomach. Treating only the gut problem significantly improved most of them, and the licking stopped completely in 9 of the 17 dogs that took part, according to a Clinician's Brief summary. Patify's guide to a dog licking floors and carpets covers that pattern.
What to note and film for your vet
Episodes often stop at the clinic door. Film only if it does not delay emergency care.
- Film from the side, with sound, for 30–60 seconds, with mouth, throat, chest and belly in the frame.
- Count breaths at rest for 30 seconds and double it (normal: 12–30 per minute).
- Note what came up: undigested food, yellow fluid, foam or blood. A photo helps.
- Write down timing: last meal, start and length of the episode, whether your dog had just lain down.
- List what was chewed or eaten in the last 24 hours and anything missing. Keep packaging and labels.
- Add the background: recent anesthesia, new tablets, rabies vaccination, weight, appetite, bark change, cough.
- Does your dog drink normally but struggle with food?
- Does it pick food up, drop it and try again?
- Does it swallow several times for each mouthful, or gag while eating?
- Does anything come out of the nose after eating or drinking?
- Does it happen during the day as well as at night?
What to do now, and what not to do at home
If no red flag applies and the bout has stopped, with your dog alert, breathing normally and drinking without trouble, careful observation is reasonable. Call your vet the same day if it comes back, interrupts eating, or comes with regurgitation, pain or poor appetite, and sooner for puppies, seniors and dogs with a known illness.
Safe steps
- Keep your dog calm; move it away from any obvious stressor (VCA).
- Remove chews, bones and toys until a vet has looked.
- Keep fresh water available unless the clinic says otherwise; ask about the next meal.
- Use a harness rather than a neck collar for walks if your dog coughs, gags or breathes noisily (VCA's advice for laryngeal paralysis).
What not to do
Water intake is a useful clue in itself; Patify's guide to a dog that eats but does not drink explains how to measure it.
What the vet will check
After your description, video and a full exam, tests follow the most likely cause:
| Test | What it finds |
|---|---|
| Watching your dog eat and drink | Oral dysphagia, which is often visible this way (UC Davis review) |
| Plain X-rays | Many stuck objects such as bones (Merck); the outline of the esophagus; the lungs |
| Contrast esophagram | Objects that do not show on plain X-rays (Merck) |
| Fluoroscopy (video X-ray of swallowing) | Tells pharyngeal from cricopharyngeal dysphagia |
| Endoscopy | The tool of choice for esophagitis and reflux (plain X-rays add little there), and the usual way to remove stuck objects |
| Laryngoscopy | Confirms laryngeal paralysis |
| Blood and urine tests | Illness elsewhere that causes nausea |
Merck describes removing most esophageal objects through the mouth with a flexible endoscope, pushing some into the stomach, and surgery for a perforation or an object that cannot be retrieved. For reflux, VCA describes antacid medication, a low-fat prescription diet and small, frequent meals, and notes that most dogs improve rapidly with treatment.
Watch, call today or go now: a decision table
| What you see | What to do |
|---|---|
| One short bout of snorting or swallowing, normal before and after | Watch; film the next episode |
| Lip licking and gulping before meals or in the early morning, otherwise healthy | Book a vet visit; keep a timing log |
| Episodes most nights, restlessness, cough or bark change | Book a visit this week |
| Licking floors or carpets plus gulping | Book a visit; ask about a gastrointestinal work-up |
| Regurgitating food, losing weight, approaching food then refusing it | Call your vet today |
| Started after a bone, rawhide, dental chew or toy; drooling and gagging | Go now, even if your dog still drinks |
| Unproductive retching, swelling belly, restlessness | Emergency hospital immediately |
| Breathing trouble, bluish gums, collapse, food or saliva out of the nose, inability to swallow, possible poison | Emergency hospital immediately; call ahead |
Frequently asked questions
Why does my dog keep swallowing?
The most common reason is nausea: VCA lists lip licking, salivating and repeated swallowing as signs that come before vomiting. Reflux, a stuck object, mouth or throat pain and airway problems look similar, so recurring episodes need a vet exam.
Why is my dog constantly swallowing at night?
Timing is a clue, not a diagnosis. VCA lists pacing or restlessness at night as a sign of reflux, and empty-stomach nausea with yellow vomit typically shows up in the early hours of the morning. Log the time of the last meal, the episode and anything that comes up, and show your vet.
Why does my dog keep swallowing and licking his lips?
Lip licking with swallowing is typical of nausea, reflux and a sore throat such as tonsillitis, and nervous dogs also lick and drool. In a 2012 study, 14 of 19 dogs that excessively licked surfaces had a gastrointestinal problem, and treating it improved most of them.
Is it an emergency if my dog keeps gulping?
Go to an emergency vet if the gulping comes with retching that brings nothing up and a swelling belly, breathing trouble or bluish gums, collapse, heavy drooling with an inability to swallow, or a possible poison. Recurring episodes need a vet visit.
My dog keeps swallowing like something is stuck in her throat. What should I do?
Call a vet now, especially after chewing a bone, rawhide or dental chew. The Merck Veterinary Manual lists drooling, gagging, regurgitation and repeated attempts to swallow as signs of an object in the esophagus, and says it should be removed immediately once diagnosed. Do not give bread or reach into the throat.
Can something be stuck if my dog can still drink water?
Yes. The Merck Veterinary Manual notes that a partial obstruction may allow fluids but not food to pass. Drinking does not rule out a stuck object, and you should not offer food to test it.
Can acid reflux make a dog gulp?
Yes. VCA lists lip licking, difficulty swallowing, a change in bark, a chronic cough and restlessness at night among the signs of reflux disease, and the MSD Veterinary Manual lists repeated swallowing attempts and drooling as signs of esophagitis. Reflux is often diagnosed with endoscopy.
Is reverse sneezing the same as gulping?
No. In a reverse sneeze the dog stands still, stretches its neck and pulls air in through the nose with a loud snort for a few seconds to a minute. VCA calls it harmless and notes that something to lick or drink may stimulate swallowing, but new or frequent episodes should be checked.
My dog keeps hiccuping and swallowing. Is it the same thing?
Hiccup-like jerks and repeated swallowing can look alike on a phone video. If the episodes come with lip licking, drooling, regurgitation or coughing, treat them as a swallowing problem and show your vet a clip.
Can I give my dog Pepcid or omeprazole for gulping?
Only if your veterinarian prescribes it for this dog. Gulping has many causes, such as a stuck object or a sore mouth, that acid reducers do not treat.
Sources (accessed October 29, 2026)
- Merck Veterinary Manual: "Esophageal Foreign Bodies in Small Animals" (A. Defarges; updated September 2024); Dog Owners: "Disorders of the Esophagus in Dogs" (P. Walters; updated September 2024), "Disorders of the Mouth in Dogs" (A. M. Reiter; updated June 2026), "Disorders of the Pharynx (Throat) in Dogs" (J. F. Hawkins; updated September 2024), "Rabies in Dogs" (C. E. Rupprecht; updated July 2026).
- MSD Veterinary Manual: "Esophagitis in Small Animals" (A. Defarges; updated September 2024); "Rhinitis and Sinusitis in Dogs and Cats" (C. C. Tonozzi; updated September 2024).
- VCA Animal Hospitals: "Vomiting in Dogs" (updated August 14, 2026), "Gastroesophageal Reflux Disease (GERD) in Non-Brachycephalic Dogs" (June 18, 2025), "Tonsillitis in Dogs" (March 10, 2025), "Reverse Sneeze in Dogs" (October 31, 2022), "Laryngeal Paralysis in Dogs" (May 26, 2025), "Signs Your Dog is Stressed and How to Relieve It" (March 24, 2025).
- Cornell University, Richard P. Riney Canine Health Center: "Recognizing and responding to canine respiratory distress" (updated March 2025).
- American College of Veterinary Surgeons: "Gastric Dilatation-Volvulus" and "Brachycephalic Syndrome".
- Pollard RE (University of California, Davis). Imaging Evaluation of Dogs and Cats with Dysphagia. ISRN Veterinary Science, 2012.
- Bécuwe-Bonnet V, Bélanger MC, Frank D, et al. Gastrointestinal disorders in dogs with excessive licking of surfaces. Journal of Veterinary Behavior 2012;7(4):194-204, as summarized by dvm360 (April 1, 2013) and Clinician's Brief (January 2013).
- American Kennel Club: "Bilious Vomiting Syndrome in Dogs" (March 25, 2024).
- Pet Poison Helpline: Emergency instructions for pet owners.
- This guide is general information and cannot diagnose your dog. If you are worried, call your veterinarian or an emergency clinic.
