Dog Seizures: What They Look Like & What to Do

Seizures are a symptom, not a diagnosis. In dogs, they can happen because of idiopathic epilepsy, a structural problem in the brain, a toxin, or a body-wide illness that affects the brain. Idiopathic epilepsy is the most common cause of recurrent seizures in dogs, and it often starts between about 6 months and 6 years of age. If your dog is very young, older at first onset, or has an abnormal neurologic exam between seizures, your vet may be more concerned about another cause.

Common brain-related causes include brain tumors, inflammatory brain disease such as meningoencephalitis, congenital problems like hydrocephalus, head trauma, and stroke-like events. Common body-wide causes include low blood sugar, liver disease including portosystemic shunts, kidney failure, electrolyte problems such as low calcium, and overheating. Toxin exposure is also important to rule out, especially with xylitol, chocolate, some human medications, rodenticides, and slug bait.

Seizures can be generalized or focal. Generalized seizures often involve collapse, stiffening, paddling, salivation, and loss of bladder or bowel control. Focal seizures can be much subtler and may look like facial twitching, snapping at the air, sudden fear, staring, or repetitive chewing motions. Because focal seizures can mimic other problems, a video can be very helpful for your vet.

Breed can matter too. Epilepsy is reported more often in some purebred dogs, including Beagles, Border Collies, Boxers, Cocker Spaniels, Golden Retrievers, Labrador Retrievers, and Bernese Mountain Dogs. That does not mean mixed-breed dogs are protected, though. Any dog can have seizures, and the next step depends on age, history, exam findings, and how severe the episodes are.

See your vet immediately if the seizure lasts more than 5 minutes, if your dog has more than one seizure in 24 hours, if your dog does not recover normally, or if there is any chance of toxin exposure, heatstroke, or head trauma. Puppies, very small dogs, and dogs with diabetes also deserve faster evaluation because low blood sugar can trigger seizures and become dangerous quickly.

A single brief seizure that stops on its own is often not a middle-of-the-night emergency if your dog recovers well, but it still deserves a prompt call to your vet and a scheduled exam. New-onset seizures in a dog older than about 5 to 6 years are more concerning for structural brain disease, so your vet may recommend a more complete workup sooner.

During the seizure, focus on safety. Move furniture or sharp objects away, block access to stairs, dim the room if possible, and start timing the event. If it is safe, record a short video. Do not hold your dog down, and do not put your hands near the mouth. Dogs do not swallow their tongues during seizures, but they can bite unintentionally.

Afterward, many dogs go through a post-ictal phase with pacing, confusion, temporary blindness, hunger, thirst, or clingy behavior. This can last minutes to hours. Keep the room quiet, offer water once your dog is fully alert, and write down what happened. That information helps your vet decide whether monitoring, medication, or referral makes the most sense.

If your dog is actively seizing, your vet will stabilize first. Emergency care may include IV access, oxygen support, temperature control, blood glucose testing, and anti-seizure medication such as diazepam or levetiracetam. Dogs with status epilepticus or cluster seizures may need hospitalization for monitoring because repeated seizures can lead to overheating, low oxygen, and worsening neurologic injury.

Once your dog is stable, your vet will look for the cause. That usually starts with a history, physical exam, and neurologic exam, plus blood work and often a urinalysis. These tests help screen for low blood sugar, liver disease, kidney disease, electrolyte problems, inflammation, and other metabolic triggers. Depending on the case, your vet may also recommend bile acids testing, blood pressure measurement, infectious disease testing, or toxin-related evaluation.

If the history or exam suggests a structural brain problem, your vet may recommend referral for MRI and sometimes cerebrospinal fluid analysis. MRI is the main way to look for tumors, inflammation, stroke-like lesions, or congenital abnormalities. This is especially important in dogs with first seizures later in life, abnormal neurologic findings between seizures, or seizures that are hard to control.

Treatment decisions depend on the pattern. Some dogs are monitored after a first isolated seizure. Others need medication sooner, especially if seizures are severe, prolonged, clustered, or happening often enough to affect quality of life. Your vet may also recommend a seizure diary and follow-up blood testing if long-term medication is started.

If your dog has a seizure at home, your job is safety and observation. Start a timer, move hazards away, and keep children and other pets back. If your dog is near stairs, water, or furniture edges, gently protect the area without restraining the body. If it is safe, take a short video for your vet. That video can help distinguish a generalized seizure from a focal seizure or another movement disorder.

Do not put your hands near the mouth, and do not try to pull the tongue out. Dogs do not swallow their tongues during seizures. Restraining the body can also increase the risk of injury to both you and your dog. If your vet has prescribed a rescue medication for prolonged or cluster seizures, follow those instructions exactly and head in for emergency care when advised.

After the seizure, many dogs are disoriented. Keep the room dim and quiet. Offer water only when your dog is fully alert and able to swallow normally. Some dogs pace, seem temporarily blind, act hungry, or want extra reassurance. Others want space. Both can be normal during the post-ictal period.

Long term, consistency matters. Give medication exactly as prescribed, use alarms if needed, and never stop anti-seizure medication abruptly unless your vet directs you to. Keep a seizure log with the date, time, duration, what the episode looked like, possible triggers, and how long recovery took. That record often guides the next treatment decision better than memory alone.