Heat Risks For Flat-Faced Dogs: What Frenchie, Bulldog And Pug Owners Need To Know

Flat-faced dogs are brilliant little characters.

Frenchies with their sofa opinions. Bulldogs with their solid little waddles. Pugs with their big eyes and even bigger personalities. They are funny, loving, stubborn and full of charm.

But when the temperature rises, they need us to see past the cuteness and pay attention to what their bodies are telling us.

Because for flat-faced dogs, heat is not just uncomfortable.

It can become dangerous quickly.

The proper word for flat-faced dogs is brachycephalic. It means short-headed, and it describes breeds with shorter skulls and muzzles, including French Bulldogs, English Bulldogs, Pugs, Boston Terriers, Shih Tzus and Pekingese. The reason heat matters so much for these breeds is simple: dogs rely heavily on panting to cool down, and brachycephalic dogs often cannot pant as effectively because of their shorter snouts and restricted airways. The RSPCA lists flat-faced breeds as more at risk of heatstroke because some cannot pant as effectively, and PDSA says flat-faced dogs struggle to release body heat through the nose because they have much less space inside it.

That is the part I think every owner needs to sit with.

A Frenchie who sounds snuffly in the heat may not be “just being a Frenchie.”

A Bulldog who flops down halfway through a walk may not be lazy.

A Pug who pants heavily after a few minutes may not be dramatic.

They may be telling you their body is struggling to cool itself down.

At Foxy & Ruby, we talk a lot about dog-conscious living - seeing the world from the dog’s point of view and making calmer, more considered choices for the homes and routines we share with them. Our guide is built around the truth that dogs cannot choose their environment. Humans choose what surrounds them.

In a heatwave, that responsibility becomes even more important.

Why flat-faced dogs are more at risk in hot weather

Dogs do not cool down like we do.

Humans sweat across the skin. Dogs mainly cool themselves by panting, using airflow over moist surfaces in the mouth and nose to help release heat.

For longer-nosed dogs, there is more space for that process to happen.

For flat-faced dogs, everything is more compressed.

That shorter nose can mean narrower nostrils, a crowded throat, a longer soft palate, and more effort just to move air in and out. Add heat, excitement, exercise or stress, and the body has to work even harder.

The Royal Veterinary College says brachycephalic breeds are at least twice as likely to suffer from heat-related illness, with some breeds facing much higher risk. English Bulldogs, for example, have been linked with a 14-fold increase in risk in RVC research.

A more recent RVC study looking at emergency care records from 2022 found that nearly half of dogs with heatstroke were flat-faced breeds, and flat-faced dogs were four times more likely to develop heatstroke than normal-faced dogs. The same study found that 59.64% of annual heatstroke cases occurred during just 40 days that made up five heatwave periods.

That is a powerful fact.

It tells us heatwave days are not “business as usual” for dogs.

And they are definitely not business as usual for Frenchies, Bulldogs and Pugs.

The biggest danger is not always the one people think

When we talk about dogs and heat, most people immediately think of hot cars.

And yes, hot cars are incredibly dangerous.

The RSPCA says that when it is 22°C outside, a car can reach 47°C within an hour, even when the weather does not feel extreme.

But here is the fact that surprises many people: exercise is one of the biggest heatstroke triggers for dogs.

Royal Veterinary College research found that exertion or exercise - including walking, playing or running - was responsible for around 74% of heatstroke cases in the study. Hot weather alone was linked with 13%, and travelling or being left in hot vehicles with 5%.

That does not make cars safe. They are not.

It means walks deserve more respect.

A short walk on a hot day can be enough to tip some dogs into danger, especially if they are flat-faced, overweight, older, very young, unwell or already have breathing issues.

This is one of the most important mindset shifts for owners:

Skipping a walk in dangerous heat is not neglect.

It is care.

Your dog will not lose all their training because they missed an afternoon walk.

They could lose their life if they overheat.

Heatstroke can move fast

Heatstroke is not just “getting a bit too hot.”

PDSA describes heatstroke as a very serious condition that can progress quickly and, in severe cases, cause seizures, organ damage and death. The Royal Kennel Club says 1 in 7 dogs treated for heatstroke will still die, which is why fast action and vet support matter so much.

That is hard to read, but it is important.

Heatstroke is not something to wait and see with.

It can start with signs that look fairly mild: panting, fast breathing, restlessness or low energy. Then it can move into drooling, weakness, vomiting, diarrhoea, red or pale gums, collapse, seizures or loss of consciousness.

The RSPCA lists warning signs including heavy panting, drooling, confusion, noisy breathing, weakness, vomiting, diarrhoea, collapse and seizures. It also notes that noisy or faster-than-normal breathing is especially concerning in flat-faced breeds.

For a Frenchie, Bulldog or Pug, I would treat any change in breathing seriously.

If they are panting harder than usual, making more noise than usual, slowing down, refusing to move, seeking shade, drooling, wobbling or looking distressed, stop.

Do not push through.

Do not say, “We’re nearly home.”

Do not assume they are being stubborn.

Get them cool and get help.

The “normal snorty dog” problem

One of the hardest parts of caring for flat-faced breeds is that many warning signs get normalised.

Snoring gets called cute.

Noisy breathing gets called breed typical.

Stopping on walks gets called laziness.

Heavy panting gets called excitement.

But if a dog already has a restricted airway, heat adds extra pressure to a system that may already be working harder than it should.

This is why flat-faced dog owners need to know their dog’s normal in detail.

What do they sound like when relaxed?

How quickly do they recover after a calm walk?

How do they breathe while asleep?

How do they behave in warm rooms?

Do they choose cool floors?

Do they seek shade early?

Do they pant in situations where another dog seems fine?

Your dog’s normal is your early warning system.

If something changes, listen.

How owners can reduce the risk

The best heatstroke plan is not a dramatic rescue plan.

It is prevention.

For flat-faced dogs, prevention often means being the boring grown-up in the room.

The one who says no to the midday walk.

The one who cuts the outing short.

The one who leaves the dog at home instead of taking them to a sunny café courtyard.

The one who chooses shade over photos.

The one who says, “Actually, they’ve had enough.”

That is not being overprotective.

That is understanding the breed in front of you.

The British Veterinary Association advises providing fresh water, shade and ventilation, avoiding exercise during the hottest part of the day, avoiding hot tarmac, taking extra care with older, overweight, flat-faced dogs or dogs with heart or lung problems, and walking early or late - or skipping walks altogether if temperatures are high.

Here is the dog-conscious version.

Walk when it is genuinely cool, not just convenient. For many dogs, that means early morning. During heatwaves, evenings can still be warm because pavements and buildings hold heat.

Choose shade and grass over pavement. Hot tarmac can burn paw pads, and the Royal Kennel Club advises using the back-of-hand test: if you cannot keep the back of your hand on the pavement for seven seconds, it is too hot for your dog to walk on.

Keep walks short and sniffy. A gentle sniff walk in the shade is safer and more satisfying than a long route taken at the wrong time.

Use a harness instead of attaching the lead to a collar. PDSA says a harness puts less pressure on the throat and can make it easier for dogs to pant and cool down, especially if they have breathing problems or are flat-faced.

Carry water and a bowl. Do not rely on finding water while out.

Avoid high-energy play. No ball chasing, no running, no “just one more throw.” Dogs can overdo it because they are excited, not because their body is coping well.

Make home the cooling zone. Fresh water, shade, airflow, cool mats, damp towels to lie on, fans used safely, and calm indoor routines all help.

Never leave dogs in cars. Not in shade, not with windows cracked, not for a quick errand.

And perhaps most importantly, drop the guilt.

If it is too hot, missing the walk is the right decision.

What to do if your dog overheats

If you think your dog is overheating or showing signs of heatstroke, act quickly.

The RSPCA’s advice is clear: cool first, transport second. Stop exercise, move the dog away from heat and into shade or a cooler place, pour water cooler than the dog’s body temperature over the body while avoiding the head, create airflow with a fan, then get veterinary help urgently. The RSPCA also warns not to place damp towels over the dog’s body because they can trap heat. Damp towels can be placed underneath instead and re-wetted often.

PDSA also advises moving the dog to shade or a cool room, cooling them immediately with cold tap water, creating a breeze, offering cold water without forcing them to drink, and calling your vet as soon as possible.

This is emergency advice, not a replacement for veterinary care.

Even if your dog seems to improve, speak to a vet. Heatstroke can cause internal damage that is not obvious from the outside.

The overlooked indoor risks

Heat risk is not only about walks.

Flat-faced dogs can also struggle indoors if the room is too warm, poorly ventilated or humid.

Conservatories, sunny kitchens, parked cars, small rooms, grooming dryers, warm bedrooms and poorly ventilated spaces can all become risky. RVC notes that exercising excessively in warm weather or being left in a warm or humid environment that is poorly ventilated can cause animals to quickly overheat.

So think about your home from your dog’s height.

Where do they lie?

Is the sun moving across that spot?

Is there airflow?

Can they choose a cooler place?

Is their water bowl full?

Can they get away from warm rooms?

Do they have a cool surface, shaded corner or safe tiled space?

Dogs often try to tell us what they need. They lie on tiles. They move away from soft bedding. They seek shade. They stretch out rather than curl up. They refuse to go outside.

Let them choose cooler options.

And do not be offended if they abandon the beautiful bed you bought them for the kitchen floor.

The floor may simply be doing a better job.

A simple heatwave routine for Frenchies, Bulldogs and Pugs

Here is a practical routine you can use when temperatures rise.

Start the day early. Offer a short, calm walk only if the air and ground are cool. Keep it slow, shady and sniff-led.

Check breathing before, during and after. If your dog sounds noisier than usual or takes longer to recover, make the next walk shorter or skip it.

Keep excitement low. Heatwave days are not the time for intense play, training marathons or busy outings.

Refresh water often. Add extra bowls in different rooms if needed.

Create cooling choices. Shade, cool floors, safe airflow, cool mats, or a damp towel underneath them can all help.

Move activities indoors. Use gentle enrichment, lick mats, scatter feeding, sniff games or calm chewing instead of long walks.

Watch the pavement. If it is too hot for your hand, it is too hot for paws.

Avoid unnecessary car trips. Even travelling can be stressful and warm for flat-faced dogs.

Keep grooming gentle. A clean coat and comfortable skin help dogs feel better, but avoid stressful grooming during hot periods.

Have a vet plan. Know where your nearest vet is and what to do if your dog shows signs of heatstroke.

This routine is not complicated.

It is calm, sensible and built around the dog’s actual needs.

What owners sometimes get wrong

Most mistakes come from love, not laziness.

We want to keep the routine. We want to give them a walk. We want them to enjoy the day. We want to include them.

But in hot weather, inclusion can become risk.

Taking your Frenchie to a busy outdoor event may feel kind, but if there is no shade, no airflow and lots of excitement, it may be too much.

Letting your Bulldog sit in the garden may seem harmless, but if they are in direct sun and panting heavily, they need moving.

Bringing your Pug on every errand may feel like companionship, but car travel and waiting around can be dangerous in heat.

A dog-conscious choice is not always the cutest choice.

Sometimes it is leaving them at home in the cool.

Sometimes it is cancelling the plan.

Sometimes it is swapping the walk for a sniff game.

Sometimes it is saying, “Not today.”

That is care.

The bigger truth

Flat-faced dogs are not fragile little ornaments.

They are funny, bold, loving dogs with huge personalities.

But their bodies do need us to be honest.

French Bulldogs, Bulldogs and Pugs are at higher risk in hot weather because their airway shape can make cooling harder. Heatstroke can develop quickly. Exercise is a major trigger. Heatwave days carry extra risk. Cars can become deadly fast. And noisy breathing in the heat should never be brushed off.

None of this is about fear.

It is about responsibility.

Your dog can’t choose the temperature.

They can’t read heat alerts.

They can’t check the pavement.

They can’t decide the walk should be skipped.

They rely on us to shape the day around what their body can cope with.

That is dog-conscious living.

Not complicated. Not preachy. Just thoughtful.

Fresh water. Shade. Shorter walks. Cooler times. Less excitement. More listening. Quick action if something feels wrong.

For calmer homes. For safer routines. For dogs who trust us to notice before it becomes an emergency.

Designed for life at dog level.

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