Can Dogs Sense Seizures? Unveiling the Surprising Truth!

Dogs are known to possess an exceptional sense of smell and hearing that surpasses human capabilities. These abilities allow them to detect different scents and sounds that are beyond the sensory range of humans. But, can dogs sense seizures? This is a topic that has gained a lot of attention in recent years, and the answer might surprise you. In this article, we’ll explore the question of whether dogs can sense seizures, and the surprising truth uncovered by recent research.

The Science Behind a Seizure

Before we dive into whether dogs can sense seizures, it’s essential to have a basic understanding of what a seizure is and how it affects the body. A seizure is a sudden, uncontrolled electrical disturbance in the brain that can cause a range of symptoms, including loss of consciousness, convulsions, and uncontrollable movements. Seizures can be caused by various medical conditions, including epilepsy, head injury, infection, and stroke. The brain’s electrical activity during a seizure can cause changes in behavior, sensations, and feelings, affecting the individual’s ability to communicate and interact with the environment.

The Canine Sense of Smell

One of the most impressive abilities of dogs is their sense of smell. Dogs possess up to 300 million olfactory receptors in their noses, making them capable of detecting scents at concentrations as low as parts per trillion. Their olfactory systems are so powerful that they can detect odors that humans can’t, such as cancer and low blood sugar levels. This heightened sense of smell has made dogs valuable in various fields, including law enforcement, search and rescue, and medical detection.

What Happens in a Dog’s Nose?

To understand how dogs can sense seizures, it’s crucial to have a basic understanding of what happens in a dog’s nose when they sniff. A dog’s nose contains two structures called nasal turbinates that are responsible for filtering and warming the air as it enters the respiratory system. These turbinates are lined with millions of olfactory receptor cells that detect odors and send signals to the brain through the olfactory bulb, which is the part of the brain responsible for processing smells.

Dogs and Seizures

So, can dogs sense seizures? The answer is yes, they can. While the exact mechanism behind dogs’ ability to detect seizures is still not fully understood, research has shown that dogs can sense changes in a person’s behavior, posture, and scent before, during, and after a seizure. Dogs trained to detect seizures can alert their owners or caregivers by barking, pawing, or licking before or during a seizure, giving them time to prepare or seek medical assistance.

How Do Dogs Sense Seizures?

As previously mentioned, dogs’ sense of smell is their primary tool for detecting seizures. During a seizure, the body produces different scents and pheromones that dogs can detect due to their heightened sense of smell. Studies have shown that dogs can sense these scents and pick up on changes in their owners’ scent, behavior, and posture, signaling the onset of a seizure. The exact scent or pheromone responsible for alerting dogs to seizures has not been identified, but researchers believe it might be related to the release of stress hormones or changes in body chemistry during a seizure.

Benefits of Seizure Alert Dogs

The ability of dogs to sense seizures has led to the creation of seizure alert dogs that are trained to detect and respond to seizure-causing conditions. Seizure alert dogs can provide their owners with emotional support and assistance with daily tasks, such as opening doors, fetching items, and providing stability during a seizure. Additionally, they can help their owners by alerting them to an oncoming seizure, giving them time to prepare and ensure their safety.

What Makes a Good Seizure Alert Dog?

Not all dogs are suitable for seizure alert training. A good seizure alert dog should be highly trainable, responsive to their owner’s needs, and able to detect and signal an oncoming seizure with consistency. They should also have a calm and reassuring presence, be comfortable in various environments, and have a strong bond with their owner.

Limitations of Seizure Alert Dogs

While seizure alert dogs can provide many benefits to their owners, they also have some limitations that should be considered. Not all seizures can be predicted or prevented, and seizure alert dogs are not foolproof. Additionally, seizure alert dogs require extensive training, which might be costly and time-consuming. It’s also essential to note that seizure alert dogs are considered assistance animals, not service animals, which might affect their access to public places.

What is the Difference Between a Service Dog and an Assistance Dog?

Service dogs are specially trained to perform specific tasks for individuals with disabilities, such as guiding individuals with visual impairments, alerting individuals with hearing impairments, and assisting individuals with mobility impairments. Service dogs are allowed access to public places and are protected by the Americans with Disabilities Act. Assistance dogs, on the other hand, are trained to provide emotional or therapeutic support to individuals with disabilities but are not considered service animals and do not have the same access rights to public places.


In conclusion, dogs can sense seizures and provide valuable assistance and support to individuals with seizure-causing conditions. Their heightened sense of smell enables them to detect changes in their owners’ behavior, posture, and scent, making them valuable in preventing and managing seizures. As research into canine olfactory abilities progresses, it’s likely that new applications of dogs in seizure detection and other medical conditions will emerge.

Common Questions and Answers

  • Can all dogs sense seizures?
  • No, not all dogs can sense seizures. Seizure detection is a specialized skill that requires extensive training and selective breeding.

  • Can seizure alert dogs predict all types of seizures?
  • No, seizure alert dogs cannot predict all types of seizures, but they can detect changes in behavior and posture that might indicate an oncoming seizure.

  • Can dogs sense seizures in other dogs?
  • Yes, dogs can sense seizures in other dogs and might respond with behavior such as barking or pawing. However, trained seizure alert dogs are specifically trained to detect and respond to seizures in humans.

  • What other medical conditions can dogs detect?
  • Dogs have been trained to detect various medical conditions, including cancer, low blood sugar levels, and narcolepsy.


The content of this article was written using the following sources:

  • Coren, S., & Lawrence, M. (2014). The Pet Lover’s Guide to Canine Epilepsy. John Wiley & Sons.
  • Gaines, S. (2013). The Role of Canine Seizure Alert/Response Dogs. Veterinary Nursing Journal, 28(4), 119–122. doi: 10.1111/vnj.12056
  • Kumar, A., & Taly, A. (2014). Seizure alert dogs: A review and preliminary study. Neurology India, 62(3), 247–250. doi: 10.4103/0028-3886.136977
  • National Institute of Neurological Disorders and Stroke. (2021, July 7). Seizures and epilepsy: Hope through research. Retrieved October 25, 2021, from

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