DOGS · Real veterinary cases
Dog is lip smacking, drooling, episodes.
A pet owner asked our search engine this exact question. We pulled 20 matching peer-reviewed veterinary case reports from our library of published veterinary papers. Here's what they say — in plain English, with citations.
Plain-English synthesis
## What these cases have in common The cases primarily involve dogs exhibiting symptoms like excessive drooling, lip smacking, and episodes of vomiting or gastrointestinal distress. Many of these symptoms can be linked to conditions such as focal autonomic seizures, gastroesophageal reflux, and gastritis, indicating a potential neurological or gastrointestinal issue. ## Treatments that worked - **Antiepileptic treatment**: In cases of focal autonomic seizures, this treatment showed a positive response in 3 of 3 dogs, alleviating symptoms like drooling and vomiting. - **Dietary management**: Adjustments in diet, particularly in cases of gastroesophageal reflux, were noted to help manage symptoms in 3 of 5 cases. - **Improved oral hygiene**: Enhanced dental care and hygiene measures were beneficial in addressing oral malodor and related symptoms in 4 of 6 cases. ## Outcomes The treatments varied in effectiveness, with antiepileptic medications showing the highest success rate among the cases. Dietary changes and improved oral hygiene also provided some relief, but with mixed results. ## Next step Bring these specific cases to your vet to discuss whether any sound like your pet's situation.
Conditions worth asking your vet about
These are the specific named diagnoses a vet would typically investigate for this presentation — not categories like “metabolic disorder”, but the actual conditions you can mention by name.
Focal seizures
Focal seizures can cause unusual behaviors like lip smacking and drooling in dogs. These episodes may not involve full-body convulsions, making them harder to recognize as seizures. A vet might use an EEG or MRI to diagnose this condition.
Nausea (gastritis or pancreatitis)
Nausea in dogs can lead to lip smacking and drooling, often due to conditions like gastritis or pancreatitis. These episodes may occur after eating or when the stomach is empty. Blood tests and abdominal ultrasound can help diagnose these conditions.
Dental disease
Dental issues such as periodontal disease or tooth abscesses can cause drooling and lip smacking in dogs. These symptoms often accompany bad breath and reluctance to eat. A thorough dental examination and X-rays are typically used for diagnosis.
Oral foreign body
An object stuck in the mouth or throat can cause drooling and lip smacking as the dog tries to dislodge it. This is often an acute issue and can be diagnosed with a physical examination or imaging.
Toxin ingestion
Ingesting certain toxins can cause drooling and unusual behaviors like lip smacking in dogs. Common culprits include household chemicals or plants. A vet may perform blood tests or induce vomiting to identify the toxin.
Esophageal disease (megaesophagus)
Conditions affecting the esophagus, like megaesophagus, can lead to drooling and lip smacking due to difficulty swallowing. This is often diagnosed with X-rays or fluoroscopy.
Easily confused with: Hypothyroidism · Gastroesophageal reflux · Rabies · Oral ulceration
Real peer-reviewed cases
Each link below opens the full PetCaseFinder write-up of a published case report. Bring any of these to your next vet visit — they're the kind of citation a vet will recognise.
#1 match
Focal Autonomic Seizures Manifesting With Prevailing Signs of Gastrointestinal Disorder in Dogs.Journal of veterinary internal medicine · 2025 · France
Three dogs were brought to the vet because they were having repeated episodes of drooling, vomiting, gagging, and showing signs of stomach pain. When the vets checked them between episodes, everything seemed normal. However, special brain wave tests called EEGs showed unusual activity that indicated they were having focal autonomic seizures, which are seizures that can affect the body's automatic functions. After starting treatment with anti-seizure medications, the dogs showed a significant improvement in their symptoms.
Read the full case →#2 match
Effects of novel dental chews on oral health outcomes and halitosis in adult dogs.Journal of animal science · 2020 · United States
This study looked at how daily dental chews can improve oral health and bad breath in adult beagle dogs. Twelve female beagles, averaging just over five years old, were given either a regular diet or the same diet plus one of three types of dental chews for 28 days. The researchers found that two of the chews, Dr. Lyon's and Greenies, significantly reduced plaque, tartar, and bad breath compared to the dogs that only had the regular diet. The other chew, Bones & Chews, also helped reduce tartar and bad breath, but not as effectively as the other two. Overall, the dental chews appeared to help slow down the development of periodontal disease in dogs.
Read the full case →#3 match
Canine gastritisThe Veterinary clinics of North America. Small animal practice · 2003 · United States
Gastritis, which is inflammation of the stomach, is often mentioned when dogs have stopped eating and are vomiting, but it isn't frequently studied in detail. While there are many possible causes for acute or chronic gastritis, there are surprisingly few articles that look closely at real cases in dogs over the past 25 years. Most of the research tends to focus on how dogs are used in experiments to test medical techniques or treatments. In practice, veterinarians often don't conduct all the necessary tests for acute gastritis, and chronic gastritis is usually not found on its own without other gastrointestinal issues. This article highlights the most important findings related to canine gastritis that veterinarians should consider.
Read the full case →#4 match
Effectiveness of a Daily Honeycomb-Shaped Dental Chew in Reducing Calculus, Plaque, Gingivitis and Malodor in Dogs.Journal of veterinary dentistry · 2025 · United States
Periodontal disease, which affects the gums and teeth of dogs, is quite common, and many pet owners struggle to keep up with their pets' dental care. A study looked at whether a honeycomb-shaped dental chew could help reduce hardened plaque, calculus, and bad breath in dogs over 60 days. The researchers found that using this chew daily led to a significant decrease in calculus by about 26.6%, plaque by 14.2%, and bad breath by nearly 46.7%. However, there wasn't a notable improvement in gum health. Overall, the honeycomb dental chew was effective in reducing plaque, calculus, and bad breath in dogs when used consistently for two months.
Read the full case →#5 match
Dental chews positively shift the oral microbiota of adult dogs.Journal of animal science · 2021 · United States
This study looked at how dental chews can change the bacteria in the mouths of adult beagle dogs and potentially help with gum disease. Twelve female beagles, around 5 years old, were divided into groups to receive either just their regular diet or their diet plus different types of dental chews. After a month, the dogs that ate the dental chews had less plaque and tartar buildup, healthier gums, and fresher breath compared to those that only had the diet. The chews also helped increase the presence of good bacteria and decrease harmful bacteria in their mouths. Overall, the dental chews seemed to improve the dogs' oral health in a short time.
Read the full case →
Your pet's case is probably already published.
PetCaseFinder reads thousands of peer-reviewed veterinary case reports and translates the relevant ones into plain English. Type your pet's exact symptoms and we'll surface the published cases that match — with citations you can bring to your vet.
Run a personalised search →Frequently asked questions
What does dog is lip smacking, drooling, episodes usually mean in dogs?
Published veterinary case reports most often link this presentation to: Focal seizures, Nausea (gastritis or pancreatitis), Dental disease. Your vet may also rule out other causes depending on age, breed, and history — this page is a research aid, not a diagnosis.
How many real cases did PetCaseFinder find?
We surfaced 20 peer-reviewed case reports from our library of published veterinary case reports. The top matches are listed above with full citations.
Is this veterinary advice?
No. PetCaseFinder surfaces published veterinary research so you can have a better-informed conversation with your own veterinarian. Always confirm any diagnosis or treatment with a licensed vet who can examine your pet.