Dog Seizures: Causes, Symptoms & What to Do

Watching your dog have a seizure is frightening, and the most important thing to know in the moment is to stay calm, keep them away from stairs or furniture, and time the episode. Dog seizures can look different from one dog to the next, ranging from brief staring spells to full-body convulsions, and understanding what’s happening can help you respond calmly and know when emergency care is needed. At Caring Hearts Animal Hospital in Matthews, NC, we work with pet owners through seizure diagnosis and management regularly, so below, we’ll explore what you need to know.

What a Seizure Actually Is

A seizure happens when there’s a sudden burst of abnormal electrical activity in the brain. This disrupts normal function temporarily, which is why dogs having a seizure often lose control of their body, become disoriented, or lose consciousness briefly. Seizures can vary widely in appearance, from a brief episode of unusual stillness to a dramatic full-body event, but the underlying mechanism is the same.

Common Causes of Dog Seizures

Dog seizures can stem from a number of underlying issues, and identifying the cause is a key part of managing them long term.

• Epilepsy: the most common cause in dogs, often appearing between one and five years of age
• Toxin exposure: certain plants, foods, and chemicals can trigger seizure activity
• Liver or kidney disease: organ dysfunction can affect how the body processes toxins and regulates the brain
• Low blood sugar: more common in small breed puppies or dogs with certain metabolic conditions
• Brain abnormalities: tumors or structural issues, more frequently seen in older dogs

Breeds like Labrador Retrievers, Golden Retrievers, Beagles, and German Shepherds have a higher documented occurrence of epilepsy-related seizures, though any dog can experience one regardless of breed, age, or size.

Recognizing the Signs of Dog Seizures

Dog seizures often follow a pattern with three general phases, and recognizing each one helps you know what to expect and how to respond.

Before the Seizure (Aura Phase)

Some dogs act unusual in the minutes before a seizure begins. Restlessness, hiding, whining, or clinginess can all signal what’s coming, and pet owners who know their dog well often learn to recognize this early warning stage over time.

During the Seizure (Ictal Phase)

This is the active phase, and it can include collapsing, paddling of the legs, drooling, jaw clenching, and loss of bladder or bowel control. Most seizures last anywhere from a few seconds to a couple of minutes, though it can feel much longer in the moment.

After the Seizure (Postictal Phase)

Following the episode, dogs are often disoriented, temporarily blind, unsteady, or unusually hungry or thirsty. This recovery period can last minutes to hours, and staying calm and quiet with your dog during this time can help them settle more comfortably.

What to Do When Your Dog Is Having a Seizure

Move nearby objects out of the way, avoid putting your hands near their mouth, and place a soft item under their head if possible. Do not try to restrain your dog during a seizure. Additional tips include:

• Time the seizure from start to finish
• Keep the environment quiet and dim if possible
• Note what your dog was doing right before it started

Having this information ready before you call your vet makes the conversation faster and more useful.

When Dog Seizures Become an Emergency

Seek emergency care immediately if a seizure lasts longer than five minutes, if your dog has more than one seizure in a 24-hour period (known as cluster seizures), or if your dog doesn’t seem to fully recover between episodes. These situations require prompt veterinary attention because prolonged seizure activity can affect body temperature and brain function.

How Veterinarians Evaluate Seizures

When you bring your dog in after a seizure, your veterinarian at Caring Hearts Animal Hospital will typically ask about the timeline, frequency, and any patterns you’ve noticed, alongside bloodwork and a physical exam to help identify or rule out underlying causes. Video of an episode, if you’re able to safely capture one, can be genuinely useful during this conversation.

Dog seizures aren’t always preventable, particularly with epilepsy, but many dogs can be effectively managed long term once a treatment plan and monitoring schedule are established with your veterinarian, and frequency or severity can shift over time, which is part of why ongoing monitoring matters even after diagnosis.

Supporting Your Dog Through a Seizure Diagnosis

A seizure disorder diagnosis can feel overwhelming, but many dogs go on to live full, active lives with the right monitoring and veterinary support. If your dog has experienced a seizure, or if you have questions about symptoms you’ve observed, call us at 704-893-2799 so our team at Caring Hearts Animal Hospital in Matthews can help you build a plan that fits your dog’s specific needs.