Epilepsy in dogs is a neurological condition characterised by recurring seizures caused by abnormal electrical activity in the brain. Seizures can involve full-body shaking, loss of awareness or smaller movements such as facial twitching. Although epilepsy can be frightening for owners, many affected dogs enjoy a good quality of life with appropriate treatment and monitoring.

Watching your dog have a seizure can be extremely distressing, particularly if it happens for the first time. Understanding what is happening, how to keep your dog safe and when to seek emergency help can make a significant difference.

This guide explains the symptoms, causes, inherited risks, susceptible breeds, diagnosis, treatment and long-term outlook for epilepsy in dogs.

What Is Epilepsy in Dogs?

Epilepsy is a disorder of the brain that causes recurrent epileptic seizures. A seizure occurs when groups of nerve cells produce sudden, abnormal electrical activity that temporarily disrupts normal brain function.

The effects depend on which areas of the brain are involved. Some seizures affect the entire body, while others cause subtle changes in movement, awareness or behaviour.

Having one seizure does not automatically mean a dog has epilepsy. Epilepsy generally involves two or more unprovoked seizures occurring at least 24 hours apart.

Dogs may appear completely healthy between episodes, especially when they have idiopathic epilepsy.

The condition is not contagious, and epilepsy itself does not necessarily cause continuous pain or neurological disability.

What Does an Epileptic Seizure Look Like in Dogs?

Seizures vary in appearance, duration and severity. Recognising the different types can help owners describe an episode accurately to their vet.

Generalised Seizures

Generalised seizures involve widespread abnormal electrical activity in the brain and commonly affect the whole body.

Possible signs include:

• Sudden collapse or loss of awareness.
• Stiffening of the legs and body.
• Rhythmic jerking or paddling movements.
• Drooling or foaming around the mouth.
• Involuntary urination or defecation.
• Uncontrolled jaw movements.

These seizures often last from several seconds to a couple of minutes, although longer episodes can occur.

Focal Seizures

Focal seizures begin in a particular region of the brain and may produce less dramatic symptoms.

A dog might develop repeated facial twitching, unusual movements of one limb, repetitive chewing motions or sudden changes in awareness.

Some focal seizures progress into generalised seizures.

Not every unusual movement is epileptic. Tremors, fainting and certain movement disorders can sometimes resemble seizures.

What Happens Before, During and After a Seizure?

Some dogs show recognisable changes before a seizure, while others have no warning signs.

The recovery period is called the postictal phase. Some dogs recover within minutes, while others take several hours or occasionally longer to return to normal.

What Should You Do if Your Dog Has a Seizure?

If your dog has a seizure, protect them from injury, time the episode and avoid restraining them.

Follow these practical steps:

• Move nearby furniture or objects that could cause injury.
• Keep your dog away from stairs, sharp edges and other hazards.
• Reduce noise and bright lighting where possible.
• Start timing the seizure immediately.
• Record a short video if it is safe to do so.
• Keep children and other pets away until your dog has recovered.
• Contact your vet for advice after the episode, even if your dog appears normal.

Never put your fingers or another object into your dog's mouth. Dogs cannot swallow their tongues during a seizure, and involuntary jaw movements can cause serious bites.

Do not shake, restrain or attempt to wake a dog during a seizure.

If the seizure continues beyond two minutes, contact your vet immediately while continuing to monitor its duration. A seizure reaching five minutes is a life-threatening emergency.

The PDSA provides practical veterinary first-aid guidance for owners witnessing a seizure.

What Causes Epilepsy and Seizures in Dogs?

Seizures have several possible causes. Vets generally distinguish idiopathic epilepsy, structural epilepsy and reactive seizures.

Idiopathic Epilepsy

Idiopathic epilepsy is a common cause of recurrent seizures in dogs. It is diagnosed when other relevant causes have been excluded and there is no evidence of a structural brain disorder.

Genetic factors are believed to contribute to many cases. Dogs often develop their first seizures between six months and six years of age.

Structural Epilepsy

Structural epilepsy occurs when an identifiable problem within the brain causes recurrent seizures.

Possible causes include brain tumours, inflammation, developmental abnormalities, previous trauma and certain vascular disorders.

The underlying condition may influence treatment and prognosis.

Reactive Seizures

Reactive seizures occur when an otherwise normal brain responds to a problem elsewhere in the body or exposure to a harmful substance.

Examples include severe low blood sugar, certain toxins, significant electrolyte abnormalities and serious liver disease.

These episodes are not necessarily epilepsy. Treating the underlying cause may prevent further seizures.

Our guide to medical conditions in dogs and their warning signs explains other illnesses that owners should recognise.

Is Epilepsy in Dogs Hereditary?

Genetics plays an important role in some forms of canine epilepsy, particularly idiopathic epilepsy.

Studies of affected breeds and family lines suggest inherited susceptibility, although the exact genetic mechanisms vary and are often complex.

In many breeds, no single gene explains every case. Environmental and developmental factors may also influence whether seizures occur.

There is no universal DNA test that can reliably predict idiopathic epilepsy across all dog breeds.

Responsible breeding decisions should consider family history, affected relatives and breed-specific veterinary advice. Dogs diagnosed with suspected hereditary epilepsy should generally not be used for breeding.

The Research published by the International Veterinary Epilepsy Task Force examines inherited and suspected inherited epilepsy across purebred dogs.

Which Dog Breeds Are Most Prone to Epilepsy?

Any dog, including crossbreeds, can develop epilepsy. However, certain breeds have recognised increased susceptibility.

Border Collies

Border Collies are among the breeds in which inherited epilepsy has been investigated. Some affected dogs develop difficult-to-control seizures, although outcomes vary considerably.

Belgian Shepherds

Belgian Shepherds have a recognised genetic predisposition to idiopathic epilepsy, supported by family and population studies.

Australian Shepherds

Australian Shepherds are another breed associated with inherited epilepsy. Some affected dogs experience recurring or clustered seizures.

Labrador Retrievers and Beagles

Labrador Retrievers and Beagles have also been identified in research on breed-related epilepsy. Many affected individuals respond well to treatment.

Other breeds with reported inherited susceptibility include English Springer Spaniels, Border Terriers and certain Poodle lines.

Breed predisposition does not mean every dog will develop epilepsy, and seizure severity cannot be predicted from breed alone.

Our guide to common health problems in Labrador Retrievers

How Do Vets Diagnose Epilepsy in Dogs?

There is no single routine blood test that confirms idiopathic epilepsy.

Diagnosis begins with a detailed description of the episodes, including their duration, frequency and what happens before and afterwards.

A video recorded safely at home can be particularly helpful.

Physical and Neurological Examination

Your vet will assess your dog's general health, neurological function and medical history.

They may ask about possible toxin exposure, medications, recent injuries and any family history of seizures.

Blood and Urine Tests

Blood tests and urinalysis help investigate metabolic or systemic conditions that can trigger seizures.

These may identify abnormalities involving blood sugar, electrolytes, liver function or other organs.

MRI Scans and Specialist Investigations

Magnetic resonance imaging can help identify structural problems within the brain.

In selected cases, a veterinary neurologist may recommend analysis of cerebrospinal fluid to investigate inflammation or infection.

Advanced investigation is particularly important when seizures begin very young or later in life, neurological abnormalities are present between episodes, or seizures are unusually severe.

The Consensus guidance from the International Veterinary Epilepsy Task Force explains the diagnostic approach and why other causes must be excluded.

How Is Epilepsy in Dogs Treated?

Epilepsy treatment aims to reduce seizure frequency, duration and severity while maintaining the best possible quality of life.

Not every dog needs medication after a single seizure. The decision depends on how often seizures occur, how severe they are and the dog's overall health.

Anti-Seizure Medication

Commonly used medicines include phenobarbital, imepitoin, potassium bromide and levetiracetam, depending on the dog's circumstances and veterinary prescribing considerations.

Some dogs respond well to one medicine, while others need a combination.

Possible side effects include increased thirst, increased appetite, sedation and unsteadiness, particularly when treatment begins or doses change.

Certain medicines require blood monitoring to assess drug levels or organ function.

Never stop anti-seizure medication suddenly or change the dose without veterinary advice. Abrupt withdrawal can provoke serious seizures.

Emergency Rescue Medication

Dogs at risk of prolonged or repeated seizures may be prescribed rescue medication for use at home.

Your vet will explain exactly when and how to administer it and when emergency hospital treatment is required.

Can Diet Help Dogs With Epilepsy?

Some evidence suggests that specially formulated diets containing medium-chain triglycerides may help reduce seizure frequency in certain dogs with idiopathic epilepsy.

However, dietary management is an additional measure rather than a replacement for prescribed medication.

Do not start supplements, high-fat diets or major dietary changes without veterinary guidance, especially if your dog has another medical condition.

Can Dogs Live a Normal Life With Epilepsy?

Yes. Many dogs with epilepsy continue to enjoy walks, play, training and family life.

Some achieve excellent seizure control with medication. Others experience occasional seizures but maintain a good quality of life between episodes.

However, epilepsy can be difficult to control in some dogs, and treatment may need adjustment over time.

What Are the Possible Positive Outcomes?

With suitable medication and regular monitoring, seizure frequency and severity may reduce substantially.

Some dogs become seizure-free for long periods, although this does not necessarily mean their epilepsy has been cured.

What Are the Possible Complications?

More serious outcomes include repeated seizures within a short period, prolonged seizures, injury during episodes and side effects from medication.

Some dogs develop drug-resistant epilepsy, meaning seizures remain inadequately controlled despite appropriately selected treatment.

Severe prolonged seizures can cause dangerous overheating, neurological injury and, in some cases, death.

Does Epilepsy Shorten a Dog's Life?

Life expectancy varies according to seizure severity, frequency, underlying cause and response to treatment.

Dogs with well-controlled idiopathic epilepsy may live for many years and enjoy a good quality of life.

Those experiencing frequent cluster seizures, status epilepticus or severe underlying brain disease may have a more guarded prognosis.

A diagnosis alone cannot reliably predict an individual dog's lifespan.

How Can You Care for a Dog With Epilepsy at Home?

Consistent routines and accurate monitoring can make long-term epilepsy management easier.

Practical measures include:

• Give prescribed medication at the recommended times.
• Keep a seizure diary recording dates, duration and symptoms.
• Record seizure videos when safe.
• Attend regular veterinary reviews and blood tests.
• Provide a safe resting environment away from dangerous drops.
• Maintain regular meals, sleep and appropriate exercise.
• Discuss any suspected seizure triggers with your vet.

Do not assume every episode of shaking or collapse is caused by epilepsy. Other medical conditions can produce similar symptoms.

Our guide to common health issues in Labradoodles

When Is a Seizure an Emergency?

A seizure lasting five minutes or longer is a medical emergency. This is known as status epilepticus and can cause serious complications.

Call your vet immediately if a seizure continues beyond two minutes, so emergency arrangements can be made before it reaches five minutes.

Repeated seizures within 24 hours, particularly without full recovery between episodes, also require urgent veterinary advice.

Seek immediate help if your dog is injured, struggling to breathe, remains unresponsive or fails to recover as expected.

Follow your vet's instructions regarding emergency medication and transport. Avoid moving your dog during active convulsions unless necessary for safety or specifically advised.

Frequently Asked Questions About Epilepsy in Dogs

Can Epilepsy in Dogs Be Cured?

Idiopathic epilepsy generally cannot be cured, but many dogs achieve good seizure control with medication. When seizures result from another treatable condition, addressing that cause may prevent further episodes.

Can a Dog Have Just One Seizure?

Yes. Some dogs experience a single seizure and never have another. A first seizure still warrants veterinary assessment because it may indicate an underlying medical problem.

Are Dogs in Pain During a Seizure?

Dogs experiencing a generalised seizure are usually not consciously aware of what is happening. However, they may be confused, exhausted or uncomfortable afterwards and can injure themselves during an episode.

Can Stress Trigger Seizures in Dogs?

Stress, excitement, disrupted sleep or changes in routine may be associated with seizures in some susceptible dogs. However, triggers vary, and not every seizure has an identifiable trigger.

Can Dogs With Epilepsy Still Exercise?

Many dogs with controlled epilepsy can enjoy normal daily exercise. Activities should be adapted to their individual health, and owners should take additional precautions around swimming, heights and other situations where a seizure could be dangerous.

Is Epilepsy in Dogs Contagious?

No. Epilepsy is not contagious. However, some infections or toxic exposures can cause seizures, which is why accurate diagnosis is important.

Should I Stop Medication if My Dog Has No More Seizures?

No. Being seizure-free may indicate that the medication is working. Never stop or reduce treatment without veterinary supervision because sudden withdrawal can cause severe seizures.

Final Thoughts

Epilepsy in dogs can be a lifelong condition, but many affected dogs continue to enjoy happy, active lives with appropriate treatment and care.

Recognising seizure symptoms, responding safely during an episode and working closely with your vet are the foundations of effective management.

Keep accurate records, follow medication instructions and seek urgent help for prolonged or repeated seizures.

This article provides general educational information and does not replace individual veterinary diagnosis, treatment or emergency care.