Every summer I see the same case. A bulldog who was fine in the yard ten minutes ago, and an owner who did nothing obviously wrong. A flat faced dog cools himself through a nose and a throat that were never built for the job, so the margin between comfortable and in trouble is narrower than it is for any other breed. The good news is that almost all of it is preventable, and the one thing that decides the outcome is how quickly you act.
Emergency cooling Causes What you see Prevention Treatment Recovery What not to do
Heatstroke is more common in English and French Bulldogs than other canine breeds, primarily due to their flat heads (brachycephalic) and airway abnormalities.
- Pinched Nose
- Elongated Soft Palate
- Hypoplastic Trachea
- Everted Laryngeal Saccules
Two things in that message matter. He is still panting an hour after he stopped moving, and he is hunting for the cold floor. A bulldog who has finished working and is still working to breathe has not finished cooling, and the floor tells you he knows it too.
Take his temperature. Not because I want to be clinical about it, but because a bulldog panting hard looks exactly the same at a safe temperature and at a dangerous one, and nobody can tell the difference by looking. A rectal thermometer costs a few dollars and it is the only thing in your house that answers the question you are asking me.
If he is running hot, start cooling with tap water and a fan and get in the car. Not ice. I explain why further down the page, because reaching for ice is the most common mistake owners make here and it works against you.
Sweat Glands in Bulldogs and French Bulldogs
Humans primarily cool themselves through sweat glands; bulldogs mainly rely on panting.
While panting is the primary cooling mechanism, your bulldogs may also seek out cold surfaces and airflow, such as cool floors, wind, and fans, to help regulate their body temperature.
Unlike humans, bulldogs mostly have sweat glands on their paws.
Temperature is regulated by a control center located in your bulldog’s brain.
Heat and Hot Climate Risks in Bulldogs
- Paw Thermal Burns: walking your bulldog on hot surfaces like asphalt can cause serious, painful burn injuries to the paws
- Skin Thermal Burns: sun (UV light), especially for non-pigmented areas such as the belly, nose, and ear tips, can cause burns and lead to cancer
- Dehydration: Dehydration will stress the kidneys and can escalate conditions that lead to heat stroke
- BOAS: Exposure to heat and hot weather will exacerbate respiratory problems associated with brachycephalic obstructive airway systems
A life-threatening heatstroke can occur when your bulldog can no longer regulate its temperature.
A body temperature of 106°F is life-threatening, and temperatures beyond 109°F are likely fatal.
Bulldog Fever Versus Bulldog Heat Stroke
FEVER: Fever is a normal response to infection or inflammation and acts as a defense mechanism to aid healing and recovery, so attempting to reduce a fever forcibly is generally discouraged.
HEAT STROKE: In contrast, bulldog heatstroke is an abnormal condition where the body’s thermoregulation fails, and requires immediate emergency cooling intervention.
Be ready before you need to be
Keep a rectal thermometer wherever you keep the leash. That is the whole of my advice on preparation, and I give it to every bulldog owner who will sit still for it.
Heavy panting, a wide stance, a dog looking for the cool part of the floor: that picture looks the same whether he is comfortably warm or in real trouble. Owners tell me they waited because he did not look that bad, and they are right, he did not. The number is the only thing that separates a hot afternoon from an emergency, and getting it takes fifteen seconds.
Write it down with the time beside it, then take it again ten minutes later. Whether it is climbing or falling is more use to whoever sees him next than any description you can give over the phone.
Emergency Cooling
Active cooling should begin as soon as possible in cases of bulldog heatstroke to prevent severe health consequences and potential death.
Causes of Heat Stroke in Bulldogs
- Hot Weather and Humidity (Exposure)
- Groomer Dryers
- Poor Ventilation and Poor Airflow
- Lack of Shade and Hydration
Compounding Factors
The above primary conditions will be compounded and amplified by the following:
- BOAS (Brachycephalic Obstructive Airway Syndrome)
- Elongated soft palate
- Stenotic nares
- Hypoplastic trachea
- Everted laryngeal saccules
- Exercise: more so on a warm day
- Obesity
- Pain and Arthritis
- Shaving Coat (Removing Insulating Layer)
- Heart and Airway Disease
The number #1 compounding factor in bulldog heat stroke is BOAS
Symptoms of Heat Stroke in Bulldogs and French Bulldogs
Heat stroke triggers an inflammatory response that affects perfusion, causes hypovolemia, and may lead to multiple organ failure, including the kidneys, heart, lungs, gut, and brain.
Key symptoms include:
- Respiratory
- Panting
- Labored Breathing
- Circulatory:
- Hypotension: perfusion problems
- Bleeding: clotting problems
- Shock
- Gastrointestinal (GI):
- Vomiting: damage to the gut microbiome
- Diarrhea
- Neurological:
- Unresponsiveness
- Seizures
PREVENTION IS CURE
About this picture, because it is easily misread. This is prevention and it is not treatment. On a hot day I set up a shaded cooling area or a tent for the dog and use ice packs inside it as coolers, to bring the temperature of the space down before he gets into any trouble. The packs are not in contact with his skin and he is free to move away from them whenever he wants. None of this is what you do for a dog who is already overheating. For that, see emergency cooling above and the warnings below: cool tap water and a fan, and never ice on the dog.
Preventing Heat Stroke in Bulldogs and French Bulldogs
- COOL DOG WALKING SURFACE: don’t walk your bully on hot asphalt.
- Or have it painted with special cooling paint (see video).
- Check with your hand the temperature of the asphalt
- Use protective boots
- SUNBATHING: avoid sunbathing, especially for non-pigmented skin, as it can lead to skin cancer
- BOAS: early surgical repair of related conditions
- SHADE & WATER: proper protection from heat and sun and adequate hydration
- AIRFLOW & COOLING: fan, AC
- PAIN CONTROL:
- Analgesics
- Anti-inflammatories (NSAIDs)
- Bully Therapeutic supplements
- TRANSPORTATION: wagon
- CALM & RELAX: reduced stress and anxiety
- Nonstressful environment
- Nonstimulating environment (dog park, outdoor event, noise)
- Anti-anxiety rx
- Calming bully therapeutics
Treating Heat Stroke in Bulldogs and French Bulldogs
If heat stroke is suspected, take your bulldog to the nearest emergency room.
Here are the steps to take and possible treatments:
At Home
- Check Rectal Temperature: Confirm heat stroke by taking your pet’s rectal temperature.
- Initiate Active Cooling: If heat stroke is confirmed, spray or soak your bulldog with tap water and place a fan over them. Have the AC on while transporting to the hospital.
At the Hospital
- IV Fluids: To combat hypovolemia and support organ function.
- Oxygen: To support respiratory function.
- Pain Control: To manage discomfort and prevent further stress.
- Antibiotics: To prevent or treat infections.
- H2 Blockers or Proton Pump Inhibitors: To protect the gastrointestinal tract.
Additional Treatments:
- Dextrose: To manage blood sugar levels.
- Lidocaine: To treat arrhythmias.
- Mannitol: To reduce cerebral edema.
- Nutrient Support: Via nasogastric, esophageal, or stomach tube to ensure proper nutrition.
Hospital Monitoring After Heat Stroke
- Blood and Urine Tests: Regular blood and urine tests are needed to monitor kidney function, blood cells, liver function, and overall health.
- Coagulation Profile: Check blood clotting ability to ensure no coagulation issues.
- Blood Pressure: Monitor blood pressure to ensure it remains within a normal range.
- Tissue Oxygenation: Use a pulse oximeter to monitor tissue oxygenation levels.
- Hypothermia: Continuously monitor body temperature to avoid hypothermia.
Stop active cooling once the temperature reaches 103°F. Keep monitoring; if the temperature drops below 100°F, start controlled warming to bring it back to a safe range.
Post-Treatment Care for Bulldogs Recovering from Heat Stroke
At Home Care:
- Prebiotics and Probiotics:
- Administer prebiotics, digestive enzymes, and probiotics to help restore and maintain a healthy gut microbiome, which may have been damaged during the heat stroke.
- Calm & Relax:
- Ensure a calm and stress-free environment to promote recovery.
- Minimize physical activity and avoid exposing your bulldog to hot environments.
- Bully Therapeutics
- Immune Boosting:
- Provide a balanced diet rich in vitamins and minerals to support immune function.
- Consider supplements as recommended by your vet to boost the immune system.
- Comfort:
- Ensure your pet has a comfortable, cool, and shaded area.
- Provide plenty of fresh water and maintain a consistent routine to reduce stress.
- Bully therapeutics
Why ice is the wrong instinct
Ice feels like the right answer and it is not. Pack a very hot dog in ice, or put him in ice water, and the blood vessels in the skin clamp shut. That is precisely where you need blood moving if heat is going to leave his body. You end up with a cold surface and a dog still cooking underneath. Tap water and a fan shift more heat out of a bulldog than ice ever will, because evaporation is what does the work.
The other half of this, and the part almost nobody is told, is when to stop. Active cooling comes off at 103 degrees, not when the number finally looks normal. A dog who has been cooled hard carries on dropping after you stop, and a bulldog who overshoots into hypothermia has traded one emergency for another. Cool, check, stop at 103, keep checking on the way in.
Bulldog Heat Stroke Warnings
When treating a bulldog for heat stroke, it’s important to avoid certain methods that can worsen the condition:
- Avoid Cold Water, Ice Packs, or Ice: Do not use cold water, ice packs, or ice, as they can constrict blood vessels and impede the cooling process.
- Avoid Covering with Wet Towels: Do not cover your bulldog with wet towels, as this can trap heat and slow down evaporation, reducing cooling efficiency.
- Avoid Using Alcohol: Do not use alcohol for cooling, as it can be absorbed through the skin and cause toxicity.
He pants a lot anyway. How do I know when it is too much?
Should I use ice or cold water?
Can I wet a towel and lay it over him?
He cooled down on his own and seems fine. Do I still need the vet?
Will shaving his coat help him stay cool?
Can a supplement prevent heat stroke?
To be clear: suspected heat stroke is an emergency and nothing sold on this site treats it. Begin cooling with tap water and a fan, do not use ice or iced water, do not cover your dog with wet towels, and get to a veterinarian or emergency hospital. Supplements are not substitutes for prescribed medication or veterinary care, and anything you plan to give during recovery should be reviewed with the treating veterinarian so it fits the plan you are already following. This page is educational and is not a diagnosis or a treatment plan for your own dog.
Veterinary Care and Supportive Products
If your dog is overheating now, stop reading and go. Everything below is for prevention and for the weeks afterwards.
More Help from Dr. Kraemer
The airway is the reason heat hits bulldogs harder than other breeds, so these are the pages that matter most alongside this one:
- Brachycephalic Obstructive Airway Syndrome (BOAS)
- Stenotic nares, the pinched nose
- Elongated soft palate
- Arthritis, aches and discomfort
- Three common bulldog emergencies
- What you can handle at home, and when to see the vet
About the Author
Roy Kraemer, DVM, is a veterinarian with extensive clinical experience caring for Bulldogs and French Bulldogs. His educational work emphasizes prevention, early recognition, appropriate at-home care, responsible medication use, and veterinary evaluation when a problem is persistent or severe.
Trusted by Vets ~ Recommended by Owners ~ Approved by Bulldogs
References
- Merck Veterinary Manual. Heat Stroke and Hyperthermia in Dogs
- American College of Veterinary Emergency and Critical Care. Heat-related illness in dogs
- Hall EJ, Carter AJ, O’Neill DG. Dogs do not die just in hot cars, evidence of canine heat related illness in the United Kingdom. Animals
- Packer RMA et al. Impact of facial conformation on canine health, brachycephalic obstructive airway syndrome. PLOS ONE
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