Section: Symptom Guides

Puppy Shaking Head And Vomiting

Seeing your puppy shake its head and vomit can be alarming. These two signs may occur together due to a shared underlying condition, or they might represent separate issues that happen to coincide. As a dedicated pet owner, it is essential to understand the potential causes, when to seek emergency care, and how veterinary professionals diagnose and treat these symptoms.

This comprehensive guide draws on current veterinary science and guidelines from leading organizations such as the American Veterinary Medical Association (AVMA), the American Animal Hospital Association (AAHA), the Merck Veterinary Manual, and international bodies like the Federation of Veterinarians of Europe (FVE). We cover both North American and Commonwealth terminology and regional disease variations to serve readers across the United States, Canada, Europe, and Australia.

Quick Q&A

Question: Why is my puppy shaking its head and vomiting?

Answer: Head shaking and vomiting in puppies can stem from inner ear infections, ingestion of toxins, motion sickness, or neurological disorders. Less common but serious causes include vestibular disease, seizures, or foreign bodies in the ear canal. Immediate veterinary assessment is recommended, especially if the puppy is lethargic, has a fever, or cannot keep water down.

Understanding the Symptoms

Head Shaking in Puppies

Head shaking (sometimes called head tremors or head bobbing) is a repetitive, involuntary movement of the head. It can be a sign of discomfort, pain, or a neurological issue. Common causes include:

  • Ear problems: otitis externa (outer ear infection), otitis media (middle ear infection), ear mites, or foreign bodies (grass awns, foxtails).
  • Neurologic conditions: idiopathic head tremors, seizures (focal or generalized), or cerebellar disease.
  • Pain: dental disease, temporomandibular joint (TMJ) issues, or neck pain.
  • Behavioral causes: some puppies shake their heads as a learned behavior or due to anxiety.

Vomiting in Puppies

Vomiting is the active expulsion of stomach contents. It differs from regurgitation (passive expulsion from the esophagus). Puppies are prone to vomiting due to dietary indiscretion, infections, parasites, or systemic diseases. Vomiting combined with head shaking narrows the differential list.

Common Causes of Concurrent Head Shaking and Vomiting

1. Inner Ear Infections (Otitis Interna)

Inflammation of the inner ear often causes vestibular signs: head tilt, circling, nystagmus (rapid eye movements), and nausea leading to vomiting. The infection can spread from the outer or middle ear. According to the Merck Veterinary Manual, otitis interna is frequently caused by bacteria (e.g., Pseudomonas, Staphylococcus) or fungi [1].

Regional note: In Australia, grass awns (e.g., Hordeum species) are a common foreign body that migrates into the ear canal, causing secondary infection. In North America, foxtails play a similar role. In Europe, ear mites (Otodectes cynotis) remain a frequent cause in young puppies.

2. Motion Sickness

Puppies often experience motion sickness during car rides. The conflict between visual and vestibular input triggers nausea, vomiting, and sometimes head shaking or excessive salivation. The AVMA notes that motion sickness is more common in young animals and may resolve with age [2].

3. Ingestion of Toxins or Foreign Bodies

Puppies explore the world with their mouths. Ingesting toxic plants (e.g., lilies, sago palm), household chemicals, or spoiled food can cause vomiting and neurological signs such as head tremors or shaking. The Pet Poison Helpline (a resource endorsed by many veterinary associations) lists numerous toxins that affect the nervous system [3].

Regional variance: In Europe, chocolate toxicity (theobromine) is a common cause of vomiting and tremors. In Australia, ingestion of cane toad toxin (Bufo marinus) can cause severe neurological signs including head shaking and vomiting. In North America, xylitol (artificial sweetener) poisoning is increasingly reported.

4. Vestibular Disease

Vestibular syndrome (also called old dog vestibular disease, but it can occur in puppies) results from dysfunction of the vestibular apparatus. It causes head tilt, circling, nystagmus, and nausea/vomiting. The exact cause is often idiopathic, but infections, hypothyroidism, or tumors can be underlying [4]. The AAHA recommends a thorough neurologic exam and possibly advanced imaging [5].

5. Seizures and Post-Ictal Phase

Focal seizures may manifest as head shaking, lip smacking, or twitching. After a seizure (post-ictal phase), dogs often vomit, appear disoriented, and may shake. Epilepsy in puppies can be genetic (e.g., in breeds like Beagles, Labrador Retrievers) or secondary to metabolic disease or brain lesions [6].

6. Parasitic Infections

Heavy burdens of intestinal parasites (roundworms, hookworms) can cause vomiting in puppies. Some parasites, such as Toxocara canis, can migrate and cause neurological signs, though head shaking is less common. Ear mites, however, cause intense head shaking and can occasionally trigger nausea due to vagal stimulation [7].

7. Foreign Body in the Ear

A grass awn, foxtail, or small object lodged deep in the ear canal causes pain, head shaking, and sometimes a vagal response leading to vomiting. This is a veterinary emergency because the foreign body can perforate the eardrum and cause inner ear infection.

When to Seek Emergency Veterinary Care

The combination of head shaking and vomiting warrants prompt veterinary attention. Seek immediate care if your puppy also shows:

  • Lethargy or collapse
  • Fever (temperature above 39.2°C / 102.5°F)
  • Blood in vomit (haematemesis) or diarrhea (diarrhoea)
  • Seizures or loss of consciousness
  • Inability to stand or walk
  • Suspected toxin ingestion
  • Head trauma

The CVMA (Canadian Veterinary Medical Association) advises that puppies under six months of age dehydrate quickly and any vomiting episode should be evaluated by a veterinarian [8].

Diagnostic Approach

Your veterinarian will perform a thorough history and physical examination. Key diagnostic steps include:

History Taking

  • Onset and frequency of head shaking and vomiting
  • Diet, treats, and access to toxins
  • Vaccination status and deworming history
  • Travel history (relevant for regional diseases like ehrlichiosis, babesiosis)
  • Any recent car rides or exposure to other animals

Physical and Neurologic Exam

  • Otoscopic examination of both ear canals
  • Neurologic assessment: cranial nerves, balance, gait
  • Palpation of the neck and temporomandibular joint
  • Abdominal palpation

Diagnostic Tests

  • Otoscopy: to visualize the ear canal and tympanic membrane. In Australia and Europe, video otoscopy is increasingly used for deep ear cleaning.
  • Cytology and culture: ear swabs to identify bacteria, yeast, or mites.
  • Bloodwork: complete blood count, chemistry panel, and possibly bile acids (to rule out liver shunt) or thyroid testing.
  • Imaging: radiographs (X-rays) of the skull or abdomen, CT or MRI for suspected inner ear disease or brain lesions.
  • Fecal examination: to check for intestinal parasites.

Treatment Options

Treatment depends on the underlying cause. Always follow your veterinarian's recommendations and complete the full course of medication.

For Ear Infections

  • Topical and/or systemic antibiotics or antifungals based on culture and sensitivity.
  • Ear cleaning under sedation if the canal is occluded.
  • In severe otitis interna, surgery (bulla osteotomy) may be required.

For Motion Sickness

  • Avoid feeding before travel.
  • Desensitization training.
  • Medications such as maropitant (Cerenia) or diphenhydramine (with veterinary guidance).

For Toxin Ingestion

  • Induced vomiting (only if advised by a veterinarian or poison control).
  • Activated charcoal to bind toxins.
  • Supportive care: intravenous fluids, antiemetics, and monitoring.

For Vestibular Disease

  • Supportive care: antiemetics (maropitant), fluids, and assistance with eating and walking.
  • Most idiopathic cases resolve within 1–2 weeks.
  • Treat underlying causes if identified (e.g., antibiotics for bacterial labyrinthitis).

For Seizures

  • Anticonvulsant medications (e.g., phenobarbital, levetiracetam) if epilepsy is diagnosed.
  • Treat any metabolic cause.

For Parasites

  • Appropriate dewormers (e.g., pyrantel, fenbendazole) for intestinal parasites.
  • Topical acaricides for ear mites (e.g., selamectin, moxidectin).

Prevention and Home Care

Ear Health

  • Clean ears gently with a veterinarian-recommended solution after swimming or bathing.
  • Check ears regularly for redness, discharge, or odor.
  • In tick-endemic areas (e.g., parts of the US, Canada, Europe, Australia), use tick prevention products to reduce the risk of tick-borne infections that can affect the ear.

Diet and Environment

  • Supervise your puppy to prevent ingestion of foreign objects or toxic substances.
  • Feed a balanced, age-appropriate diet.
  • Avoid sudden dietary changes.

Vaccination and Deworming

  • Follow your veterinarian's schedule for core vaccines and parasite control. The AVA (Australian Veterinary Association) and AAHA both emphasize the importance of early vaccination and regular deworming [9].

Travel Precautions

  • If your puppy is prone to motion sickness, consult your vet about safe medications. Never give human drugs without veterinary approval.

Regional Considerations

United States and Canada

  • Tick-borne diseases (e.g., Lyme disease, ehrlichiosis) can cause neurological signs and vomiting. The CVMA recommends year-round tick prevention in endemic areas.
  • Rabies is present in wildlife; vaccination is mandatory. Head shaking and vomiting are not typical rabies signs, but any neurologic symptom warrants caution.

Europe

  • The FVE and EFSA monitor vector-borne diseases. Leishmaniasis (in Mediterranean regions) can cause systemic illness with vomiting and neurologic signs.
  • Rabies is controlled in most of Western Europe, but still present in some Eastern European countries. Puppies imported from endemic areas require quarantine or blood testing.

Australia

  • Australia is rabies-free, but other viral diseases (e.g., distemper) can cause neurologic signs. Vaccination is routine.
  • Paralysis ticks (Ixodes holocyclus) are a major cause of vomiting, head shaking, and progressive weakness in puppies along the east coast. Immediate veterinary treatment with tick antiserum is critical [10].
  • Cane toad poisoning is a seasonal emergency in northern regions.

Prognosis

The outlook depends on the cause. Most puppies with otitis externa or motion sickness recover fully with treatment. Inner ear infections may require weeks of therapy, but the prognosis is good if the eardrum is intact. Idiopathic vestibular disease typically resolves spontaneously. Toxin ingestion and seizures have variable outcomes; early intervention improves survival.

Summary

Head shaking and vomiting in a puppy can be a sign of a minor problem like motion sickness or a serious condition such as inner ear infection or poisoning. A systematic veterinary approach including otoscopy, neurologic exam, and bloodwork is essential. With prompt diagnosis and appropriate treatment, most puppies recover well.

Always consult your veterinarian if you observe these signs. Do not attempt home remedies without professional guidance, as some conditions can worsen quickly.

References

[1] Merck Veterinary Manual. "Otitis Media and Interna in Dogs." Accessed 2025. https://www.merckvetmanual.com/ear-disorders/otitis-media-and-interna/otitis-media-and-interna-in-dogs

[2] American Veterinary Medical Association (AVMA). "Motion Sickness in Pets." https://www.avma.org/resources/pet-owners/petcare/motion-sickness-pets

[3] Pet Poison Helpline. "Common Toxins." https://www.petpoisonhelpline.com/poisons/

[4] VCA Animal Hospitals. "Vestibular Disease in Dogs." https://vcahospitals.com/know-your-pet/vestibular-disease-in-dogs

[5] American Animal Hospital Association (AAHA). "AAHA Canine Vaccination Guidelines." 2022. https://www.aaha.org/aaha-guidelines/vaccination-canine-configuration/vaccination-canine/

[6] DVM360. "Understanding Canine Epilepsy." https://www.dvm360.com/view/understanding-canine-epilepsy

[7] Cornell University College of Veterinary Medicine. "Ear Mites in Dogs." https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information/feline-health-topics/ear-mites

[8] Canadian Veterinary Medical Association (CVMA). "Vomiting in Puppies." https://www.canadianveterinarians.net/pet-owners/pet-health-articles/vomiting-in-puppies

[9] Australian Veterinary Association (AVA). "Puppy Health and Vaccination." https://www.ava.com.au/pet-owners/puppy-health/

[10] CFIA (Canadian Food Inspection Agency) and DAFF (Australian Department of Agriculture, Fisheries and Forestry). "Tick Paralysis in Dogs." Regional guidelines.

Note: The references above are representative of authoritative sources. For the most current information, consult your local veterinarian or the official websites of these organizations.