Seeing your cat have a seizure can be a frightening experience. While seizures are less common in cats than in dogs, they can occur for a variety of reasons and always warrant veterinary attention. Understanding the signs, possible causes, and treatment options can help you respond appropriately and give your cat the best chance of a healthy life.

What Is a Seizure?

A seizure is a sudden, abnormal burst of electrical activity in the brain that temporarily affects the way the brain functions. Depending on the area of the brain involved, seizures can vary in appearance and severity.

A single seizure does not necessarily mean a cat has epilepsy. Epilepsy is a neurological condition characterised by recurrent, unprovoked seizures.

What Causes Seizures in Cats?

Seizures can result from a wide range of underlying conditions, including:

• Brain injuries or trauma
• Brain tumours
• Infections affecting the brain
• Inflammatory brain diseases
• Exposure to toxins (such as certain human medications, insecticides, lilies, or antifreeze)
• Liver or kidney disease
• Low blood sugar (hypoglycaemia)
• High blood pressure
• Electrolyte imbalances

In some cases, despite thorough testing, no underlying cause can be identified. This is known as idiopathic epilepsy, which is relatively uncommon in cats compared with dogs.

Signs of a Seizure

Seizures can look different from one cat to another. Signs may include:

• Sudden collapse
• Muscle twitching or jerking
• Paddling movements of the legs
• Stiffening of the body
• Drooling or foaming at the mouth
• Vocalising
• Loss of consciousness
• Urinating or defecating involuntarily

Some cats experience focal (partial) seizures, which affect only one part of the body. These may appear as:

• Twitching of the face or ears
• Repetitive chewing motions
• Excessive drooling
• Dilated pupils
• Sudden behavioural changes, such as aggression, fear, or staring into space

Before and After a Seizure

Some cats show changes before a seizure, known as the pre-ictal phase, including:

• Restlessness
• Clinginess
• Hiding
• Unusual vocalisation

After the seizure (the post-ictal phase), your cat may be:

• Disorientated
• Temporarily blind
• Wobbly when walking
• Hungry or thirsty
• Sleepy or unusually quiet

This recovery period can last from a few minutes to several hours.

Are Certain Cat Breeds More Prone to Seizures?

Unlike in dogs, epilepsy is relatively uncommon in cats, and there are no breeds that are widely recognised as being predisposed to idiopathic epilepsy. Seizures can affect cats of any breed, but they are more often the result of an underlying medical condition, such as a neurological disorder, toxin exposure, or metabolic disease. This is why any cat that experiences a seizure should be examined by a veterinarian to determine the underlying cause.