Seizures in Dogs

In this guide

A seizure happens when there is a sudden burst of abnormal electrical activity in a dog's brain. It can look dramatic, with full body convulsions, or subtle, with just a twitching limb or a moment of strange, glazed behaviour. Understanding what is happening and why is the first step to managing it well.

Types of Seizures

• Generalised seizures, the most recognisable type, involving loss of consciousness, stiffening, and convulsing of the whole body
• Focal seizures, affecting only part of the brain and causing unusual movement in one limb or one side of the body
• Psychomotor seizures, involving strange, repetitive behaviour for a short period rather than convulsions

Common Causes

• Idiopathic epilepsy, the most common cause of recurring seizures, typically starting in young to middle aged dogs with no other identifiable cause
• Low blood sugar, particularly in small breed puppies
• Liver or kidney disease affecting the body's ability to filter toxins
• Toxin ingestion, including certain plants, chocolate, or rodenticides
• Brain tumours or structural abnormalities, more likely in older dogs having a first seizure
• Infectious diseases affecting the brain, including some seen more often in dogs without regular deworming or vaccination

How Vets Diagnose the Cause

Diagnosis usually starts with a detailed history: when the seizures began, how often they occur, and whether they are getting worse. Blood work and urinalysis check for metabolic causes, while imaging such as an MRI may be recommended for dogs with atypical seizures or those starting later in life, to rule out structural brain issues.

Immediate Safety During a Seizure

If your dog is actively seizing, clear away nearby furniture or objects that could cause injury, do not put anything in their mouth, and avoid touching their head or mouth area since they may bite unintentionally. Time the episode if you can. A full step by step guide to managing an active seizure and the after care that follows is covered in a dedicated article later in this series.

Long Term Management

Dogs with recurrent seizures are often managed with long term anti-seizure medication such as phenobarbital or levetiracetam, with regular blood monitoring to keep dosing safe and effective. With good management, many dogs with epilepsy live long, largely normal lives.

The Emotional Side for Pet Parents

A diagnosis of epilepsy or recurring seizures can feel overwhelming at first, but many dogs on a well managed medication plan go on to live full, active lives with infrequent breakthrough episodes. Connecting with your vet regularly to fine tune dosing, rather than adjusting medication on your own, gives the best chance of finding a stable, comfortable long term routine for your dog.

Support groups and online communities for owners of epileptic dogs, while not a substitute for veterinary advice, can be a genuinely reassuring resource for sharing practical daily management tips and simply feeling less alone with the diagnosis. Many pet parents find comfort in connecting with others navigating the same condition.

Common Questions

At what age do seizures usually first appear?

Idiopathic epilepsy most often starts between one and five years of age. A first seizure in a dog under six months or over five years is more likely to have an identifiable underlying cause, which is why a full workup is recommended in these cases.

Are certain breeds more prone to epilepsy?

Yes, breeds such as Labradors, Golden Retrievers, Boxers, and German Shepherds are among those with a recognised predisposition to idiopathic epilepsy, though it can occur in any breed, including mixed breed dogs.

This article is for general awareness and does not replace veterinary advice. If your dog is unwell, consult a veterinarian promptly.

Article content © Ravi Teja. All rights reserved.