Few things unnerve a dog owner faster than watching a seizure. Most seizures look worse than they are, and the dog is unconscious rather than in pain, but what you do in the first few minutes matters. Veterinary neurologists agree on a simple script: stay calm, keep the dog safe, time the event, and know the red flags that mean go to the vet now.
What a Seizure Looks Like
A classic generalised seizure has three phases. Before the event, some dogs act anxious, restless, or clingy. During the seizure itself, the dog typically collapses, goes stiff, then paddles the legs, chomps the jaw, drools, and may lose bladder or bowel control. Afterwards comes the postictal phase, which can last minutes to hours.
Some seizures are subtler than the dramatic full-body version. A dog may simply stare into space, snap at invisible flies, or bite at the air. If your dog has repeated episodes of odd, unresponsive behaviour, film it on your phone and show your vet.
What to Do During the Seizure
- Stay calm and don’t restrain the dog. Movement during a seizure cannot be stopped by holding on, and you may be bitten.
- Clear the area. Move furniture away, and cushion hard edges with a blanket or pillow if the dog is knocking against them.
- Never put anything in the mouth. Dogs cannot swallow their tongue. Hands and objects in the mouth cause the worst bite injuries.
- Keep hands away from the mouth. A seizing dog doesn’t know who you are and may bite reflexively.
- Time it. Most seizures last under two minutes, but it feels far longer. Note the start and end times, and what the dog did beforehand.
- Dim and quiet the room once the shaking stops. Lights, noise, and handling can prolong recovery.
The Postictal Phase: What Comes After
After the seizure, dogs are often disoriented, wobbly, temporarily blind, ravenously hungry, or unusually thirsty. Some pace endlessly; others hide. American Red Cross guidance is blunt: don’t disturb the dog, offer water only once they are fully alert, and give them a quiet place to recover. Stay careful during this window, because a confused dog can snap even at familiar people.
When a Seizure Is an Emergency
| Situation | What it means | Action |
|---|---|---|
| Seizure lasting more than 5 minutes | Status epilepticus | Emergency clinic immediately |
| Two or more seizures without full recovery between them | Cluster seizures | Emergency – risk of brain damage and hyperthermia |
| First-ever seizure | Unknown cause | Call your vet the same day |
| Suspected toxin (chocolate, xylitol, pesticides) | Poisoning | Emergency – bring packaging if you have it |
| More than 3 seizures in 24 hours | Uncontrolled seizures | Call the vet for the next steps |
At Texas A&M’s veterinary college, neurologist Dr. Joseph Mankin advises calling the vet if a seizure lasts more than about three minutes or if seizures repeat back to back, so err on the side of the earlier call.
Why Dogs Seize and What to Record
The most common cause in dogs is idiopathic epilepsy, an inherited seizure disorder more frequent in purebreds. Other triggers include low blood sugar, liver or kidney disease, brain tumours, head injury, and poisoning. Bloodwork, a neurological exam, and sometimes imaging help your vet sort out which applies.
If your dog is diagnosed with epilepsy, keep a seizure log: the date, the time of day, whether it happened around a meal, how long it lasted, and what the dog did. Vets use that pattern to decide whether daily medication is warranted, and anti-seizure drugs aim to reduce how often and how severely seizures occur rather than to cure them.
Write your clinic’s number somewhere obvious, make sure the whole household knows the do-not-restrain, do-not-touch-the-mouth rules, and practise the plan before you need it. A calm owner is the single best piece of first aid a seizing dog can have.