Heatstroke in Dogs: Symptoms, Treatment & Prevention

Key Takeaways

• Heatstroke is a serious and potentially life-threatening emergency in dogs.
• Early recognition and prompt veterinary treatment are essential.
• Prevention is far easier than treatment.
• Dogs can overheat surprisingly quickly during warm weather.
• Knowing the warning signs could help save your dog's life.

Summer brings longer walks, beach trips, picnics, and holidays, but warmer weather also increases the risk of heatstroke in dogs. Unlike humans, dogs cannot cool themselves efficiently by sweating. Instead, they rely mainly on panting, making it much harder for them to regulate their body temperature when temperatures rise.

Heatstroke can develop faster than many owners realise, particularly during heatwaves, after strenuous exercise, or when dogs are left in hot environments. Understanding the symptoms, knowing what to do, and taking simple preventative steps can help keep your dog safe throughout the summer.

 

What Is Heatstroke in Dogs?

Heatstroke occurs when a dog's body temperature rises to dangerous levels and they can no longer cool themselves effectively. Without prompt treatment, heatstroke can affect multiple organs and quickly become a medical emergency.

It can happen during:

• Hot weather
• Vigorous exercise
• Long walks in high temperatures
• Time spent in direct sunlight
• Poorly ventilated spaces
• Hot vehicles

Heatstroke doesn't only happen abroad, dogs can develop heat-related illness during UK summers too.

 

Dogs Most at Risk

While any dog can develop heatstroke, some are more vulnerable than others.

These include:

• Puppies
• Senior dogs
• Flat-faced breeds
• Overweight dogs
• Thick-coated breeds
• Dogs with heart or breathing conditions
• Dogs recovering from illness or surgery

These dogs may need shorter walks, more frequent breaks, and additional cooling measures during warm weather.

 

Symptoms of Heatstroke in Dogs

Recognising the signs early is one of the most important things an owner can do.

Common symptoms include:

• Excessive panting
• Heavy drooling
• Bright red gums or tongue
• Weakness
• Lethargy
• Difficulty walking
• Restlessness
• Vomiting
• Diarrhoea
• Confusion
• Collapse

Some dogs may initially seem tired before their condition deteriorates rapidly. If you suspect heatstroke, treat it as an emergency.

 

What Should You Do If You Think Your Dog Has Heatstroke?

If you believe your dog may have heatstroke:

• Move them to a cool, shaded area immediately.
• Offer small amounts of cool (not ice-cold) drinking water if they are able to drink.
• Begin gently cooling them with cool water, particularly around the body and paws.
• Increase airflow with a fan if available.
• Contact your vet immediately and follow their advice.
• Transport your dog to the veterinary practice as soon as possible, even if they appear to improve.

Heatstroke is always a medical emergency, and professional assessment is important.

 

How to Prevent Heatstroke in Dogs

Fortunately, many cases of heatstroke can be prevented with a few simple precautions.

Walk During Cooler Hours

Choose:

• Early mornings
• Late evenings

These are generally the coolest parts of the day.

Read more:

→ How Hot Is Too Hot to Walk a Dog? Summer Safety Guide 

Never Leave Your Dog in a Parked Car

Even if the weather doesn't feel particularly hot, temperatures inside a parked vehicle can rise very quickly.

Leaving a dog in a parked car, even for a short time, can become dangerous.

If your dog cannot safely accompany you, it's often better to leave them at home in a cool environment.

Keep Your Dog Hydrated

Fresh drinking water should always be available.

Consider:

• Multiple water bowls around the house
• Portable water bottles for walks
• Regular drinking breaks
• Water during car journeys

Hydration becomes especially important during hot weather.

Avoid Hot Pavements

Hot surfaces can burn sensitive paw pads while also contributing to overheating.

Always check pavements before setting off.

You may also enjoy:

→ Hot Pavement Dangers for Dogs in Summer    

Provide Plenty of Shade

Whether you're:

• At the beach
• In the garden
• On holiday
• Visiting a park

…ensure your dog always has somewhere cool to rest.

Use Cooling Enrichment

On particularly hot days, swap long walks for activities that help your dog stay cool.

Ideas include:

• Frozen lick mats
• Frozen blueberries
• Paddling pools
• Indoor scent games
• Puzzle feeders
• Ice cube games

Read more:

 → Best Indoor Games for Dogs During Heatwaves  

Summer Foods That Can Help Keep Dogs Cool

Cooling treats can make hot days more enjoyable.

Dog-safe options include:

• Seedless watermelon
• Cucumber
• Blueberries
• Strawberries
• Plain pumpkin

These foods can be served chilled or frozen as part of enrichment.

Read more:

 → Best Summer Foods Dogs Can Safely Eat 

Planning Summer Days Out

Whether you're heading to the beach, countryside, or a dog-friendly café, preparation goes a long way.

Remember to pack:

• Water
• Portable bowl
• Towels
• Cooling mat
• Lead
• Treats
• Shade where possible

Before travelling, read:

 → Dog Holiday Checklist for Summer Travel 

 

People Also Ask

What are the first signs of heatstroke in dogs?

Early signs often include excessive panting, heavy drooling, restlessness, and lethargy.

Can dogs recover from heatstroke?

Many dogs can recover if they receive prompt veterinary treatment. Early recognition and immediate action are important.

How do you cool a dog with heatstroke?

Move them to a cool area, begin gentle cooling with cool water, offer small amounts of water if appropriate, and contact your vet immediately.

Which dogs are most likely to get heatstroke?

Flat-faced breeds, puppies, senior dogs, overweight dogs, and dogs with existing health conditions are generally at greater risk.

Can dogs get heatstroke indoors?

Yes. Heatstroke can occur indoors if the environment becomes too hot or poorly ventilated, especially if dogs cannot cool themselves effectively.

 

Heatstroke Prevention Checklist

Before heading outside, ask yourself:

✓ Is it cooler in the early morning or evening?

✓ Have I checked the pavement temperature?

✓ Am I bringing enough water?

✓ Will my dog have access to shade?

✓ Am I avoiding unnecessary exercise during the hottest part of the day?

✓ Do I know the signs of heatstroke?

If you answer "no" to any of these, consider changing your plans to keep your dog safe.

 

Paws for Final Thoughts

Heatstroke is one of the most serious risks dogs face during the summer, but it's also one of the most preventable. By recognising the early warning signs, planning walks carefully, avoiding excessive heat, and ensuring your dog always has access to water and shade, you can greatly reduce the risk.

Summer should be a season of adventure, not emergencies. With a little preparation and awareness, you can help your dog enjoy warmer weather safely while making memories that last long after the sunshine has gone.