Dogs Seizures: Signs, Causes, and When to Call a Vet
This article provides a general overview of seizures in dogs, covering what they look like, possible causes, how to respond at home, and when to contact a veterinarian.
Quick Answer
Seizures in dogs are caused by sudden, uncontrolled electrical activity in the brain. They may result from epilepsy, metabolic problems, toxins, tumors, infections, or head trauma. If your dog has a seizure for the first time, contact a veterinarian. Seek emergency care if a seizure lasts over 2-3 minutes or if multiple seizures happen within 24 hours.
SYMPTOM TRIAGE: Recognizing the signs of a seizure and recording the details can help your veterinarian determine the cause. Use our guided tool at PawAI Lab Symptom Triage.
What a Seizure Looks Like
A seizure is a sudden, uncontrolled electrical disturbance in the brain that affects how a dog moves, behaves, and responds. Seizures can look different from dog to dog, but most share common features.
Many dogs show warning signs before a seizure, known as an aura. Your dog may become anxious, restless, clingy, or seek a quiet place. This phase may last seconds to minutes.
During the active phase of a seizure, you may see:
- Convulsions or whole-body shaking
- Muscle twitching that may spread
- Loss of consciousness or staring blankly
- Drooling or foaming at the mouth
- Paddling motions with the legs
- Loss of bowel or bladder control
- Stiff or rigid muscles
After the seizure, dogs enter a recovery period called the post-ictal phase. Your dog may appear confused, uncoordinated, temporarily blind, or unusually tired. Recovery can take anywhere from a few minutes to several hours.
What May Be Associated With Seizures in Dogs
There are many possible reasons a dog may experience a seizure. A veterinarian can help identify the underlying cause through examination and testing.
Idiopathic epilepsy is a common cause, particularly in dogs between six months and six years of age. The term "idiopathic" means no specific cause can be found, and there may be a genetic predisposition in some breeds.
Other factors that may be associated with seizures include:
- Metabolic disorders such as low blood sugar, liver disease, or kidney disease
- Toxins and poisons including certain plants, foods like chocolate or xylitol, pesticides, and some human medications
- Brain tumors, which are more frequently seen in older dogs
- Infections affecting the brain, such as canine distemper
- Head trauma from accidents or injuries
- Heatstroke, which can lead to brain damage and seizures
Sometimes, despite thorough testing, no cause is identified. Keeping detailed records of each seizure event helps your veterinarian evaluate patterns over time.
What to Monitor at Home
Tracking seizure activity helps your veterinarian make informed decisions. For each event, record the following:
- The date and time the seizure occurred
- How long the seizure lasted
- What your dog was doing beforehand
- The specific signs you observed during the seizure
- How long the recovery period lasted
- Any possible triggers, such as stress, heat, or new foods
This information builds a picture of your dog's seizure pattern and can guide veterinary recommendations.
What to Do During and After a Seizure
How you respond during a seizure can help keep your dog safe and provide valuable information to your veterinarian.
During a seizure:
- Stay calm and note the start time
- Do not touch or restrain your dog, as involuntary movements may cause unintentional biting
- Clear the area of furniture and sharp objects
- Keep other pets and children away
- Reduce stimulation by dimming lights and lowering noise
After a seizure:
- Record how long it lasted
- Speak gently and comfort your dog during recovery
- Offer water only once your dog is fully alert and coordinated
- If possible, video future seizures to share with your veterinarian
When to Contact a Veterinarian
Any first seizure should be evaluated by a veterinarian, even if your dog appears to recover quickly. A veterinary exam can help identify or rule out underlying causes.
Seek emergency veterinary care immediately if any of the following occur:
- A seizure lasts longer than 2-3 minutes, known as status epilepticus
- Your dog has cluster seizures (two or more seizures within 24 hours)
- The seizure is accompanied by a high fever
- Your dog has trouble breathing during or after the seizure
- Your dog does not regain consciousness after the seizure
- Your dog is injured during the event
For non-urgent cases, schedule a veterinary appointment within a few days. If seizures become more frequent, last longer, or change in appearance, contact your veterinarian promptly.
Frequently Asked Questions
What is the difference between a single seizure and cluster seizures?
A single seizure is one isolated event followed by recovery. Cluster seizures are two or more seizures within a 24-hour period. Cluster seizures are more concerning and may require emergency veterinary attention, as they can indicate a more serious underlying issue.
Can stress trigger a seizure in dogs?
Some veterinarians believe that stress or excitement may lower a dog's seizure threshold in certain cases. However, seizures are caused by abnormal brain activity, and triggers vary between dogs. Keeping a record of circumstances surrounding each seizure can help identify patterns.
Are all seizures in dogs caused by epilepsy?
No. While idiopathic epilepsy is a common cause, seizures can also result from metabolic disorders, toxins, brain tumors, infections, head trauma, and heatstroke. A veterinarian can perform tests to help determine the specific cause in your dog.
Is it safe to be near my dog during a seizure?
Stay nearby but do not touch or restrain your dog. Dogs cannot control their movements during a seizure and may bite involuntarily. Focus on keeping the environment safe and timing the event until the seizure passes.
Sources
- American Animal Hospital Association (AAHA): Seizure Management in Dogs
- Cornell University College of Veterinary Medicine: Seizures in Dogs
- VCA Animal Hospitals: Seizures and Epilepsy in Dogs
- Merck Veterinary Manual: Seizures and Epilepsy
Disclaimer
This article is provided for general informational purposes only and does not constitute veterinary advice, diagnosis, or treatment. It is not a substitute for professional veterinary care. Always consult a licensed veterinarian regarding your dog's specific condition, especially if symptoms are severe, progressing, or persistent.