As spring shifts into early summer across many parts of the world, warmer days bring opportunities for longer walks, park outings, and sunny afternoons. But while we may welcome the sunshine, experts are sounding the alarm for dog owners everywhere: warm weather can quickly turn dangerous for your canine companion.
In a recent warning issued by veterinary professionals in the UK, dog owners were urged to be vigilant even on days when the temperature doesn’t seem extreme. It turns out that dogs can experience life-threatening heatstroke in conditions that humans might still consider mild — with temperatures as low as 19°C (66°F).
This reminder is more than just precautionary. Every year, thousands of dogs suffer from heat-related illnesses — and many don’t survive. The latest data and stories from pet owners, vets, and animal charities underscore just how urgent and underrecognized this risk remains.
Not Just Hot Days: Why Dogs Overheat More Easily Than Humans
Unlike humans, dogs do not sweat through their skin. Their primary cooling method is panting, which is far less effective than sweating. This biological limitation makes them especially susceptible to overheating. When temperatures rise, dogs can’t regulate their body temperature as efficiently, and their internal systems can spiral out of control within minutes.
“People often assume their dog is fine if they’re not panting heavily,” explains Dr. Rachel Lawson, a veterinary surgeon based in London. “But by the time visible signs appear, it can already be too late.”
Even worse, many pet owners unknowingly put their dogs in harm’s way by walking them during midday, leaving them in hot cars for “just a minute,” or failing to provide adequate shade and water during outdoor play.
The “Hot Car” Tragedy: Still Happening, Still Preventable
Every year, heartbreaking stories emerge of dogs left in cars on warm days — and the outcome is almost always fatal.
A closed car can become an oven in minutes. On a 22°C (72°F) day, the interior of a car can soar to 47°C (116°F) within an hour. On warmer days, it’s even worse. No amount of open windows or parked shade makes it safe.
Animal charities such as the RSPCA and PETA have run campaigns for decades, urging people to “never leave a dog in a hot car.” And yet, emergency services continue to receive thousands of calls each summer.
Just last summer in Manchester, a Labrador was rescued after being left in a parked car for over 30 minutes. By the time authorities smashed the window, the dog was unconscious and required emergency veterinary care. Thankfully, he survived — but not all dogs are so lucky.
Breed Matters: Why Some Dogs Are at Higher Risk
While all dogs are vulnerable to heatstroke, certain breeds are far more susceptible. These include:
- Brachycephalic breeds (short-nosed dogs) like Bulldogs, Pugs, Boxers, and Shih Tzus. Their narrow airways make panting even less effective.
- Large and giant breeds, such as Saint Bernards and Newfoundlands, which naturally generate more heat.
- Thick-coated dogs, including Huskies and Chow Chows, who retain heat longer.
- Senior dogs and puppies, whose temperature regulation systems aren’t as robust.
- Overweight dogs, who often have reduced stamina and breathing efficiency.
“A Pug might struggle in 19°C heat, whereas a lean, short-haired dog like a Whippet might cope better,” says Dr. Lawson. “But no dog is immune.”
Recognizing the Signs of Heatstroke
Early detection can save a dog’s life. The symptoms of heatstroke in dogs can develop rapidly and include:
- Excessive panting or difficulty breathing
- Drooling or thick saliva
- Bright red or very pale gums
- Lethargy or confusion
- Vomiting or diarrhea
- Collapse or seizures
“Heatstroke progresses quickly and often surprises owners,” warns Dr. Ben Fisher of the British Veterinary Association. “It can go from mild discomfort to a life-threatening emergency in under 30 minutes.”
What to Do if You Suspect Heatstroke
If you think your dog is suffering from heatstroke, act immediately. Delay can be deadly.
Here’s what to do:
- Move your dog to a cool, shaded area immediately.
- Apply cool (not ice-cold) water to their body. Focus on the belly, armpits, and paws.
- Offer small amounts of water to drink – don’t force it.
- Use a fan to increase evaporation and cooling.
- Call your vet right away and follow their instructions. Even if your dog seems to improve, heatstroke can cause internal damage that isn’t immediately obvious.
Never use ice or icy water — it can constrict blood vessels and slow cooling. Also, don’t delay medical attention. Every minute counts.
Walk Smart: Tips to Keep Your Dog Safe in Warm Weather
- Walk early or late: Avoid peak heat times (11 am–4 pm). Opt for early morning or evening walks.
- Check the pavement: Use the “7-second rule” — place your hand on the pavement. If it’s too hot for your hand, it’s too hot for paws.
- Hydration is key: Always carry water and a portable bowl.
- Shorten walk times: Your dog might not need a long outing. Even a few minutes in the yard might be enough on hot days.
- Avoid high-intensity play: Fetch or running can overheat dogs quickly.
Many dogs will push themselves to keep up with you, even when they’re struggling. Learn your dog’s signals, and err on the side of caution.
Case in Point: Heatstroke Data You Need to Know
According to a 2024 report from the UK Kennel Club and the British Veterinary Association:
- Around 1,200 dogs are treated annually for heatstroke in the UK alone.
- Over 14% of heatstroke cases are fatal.
- 75% of cases occur during exercise in hot weather, not just being left in cars.
- Brachycephalic dogs are twice as likely to suffer heatstroke than other breeds.
In short: dogs are more likely to suffer from overheating while walking or playing than being left in a vehicle. That’s a critical fact many owners overlook.
Vet Clinics and Charities Sound the Alarm
The British Veterinary Association, Dogs Trust, and Blue Cross have launched renewed campaigns this spring to educate pet owners.
Dr. Justine Shotton, senior vice president of the BVA, shared in a public statement:
“We see entirely preventable cases of heatstroke every year. The sad reality is many owners don’t realize how little heat it takes to put their dog at risk.”
Social media has also played a role in spreading awareness. On TikTok and Instagram, pet influencers are partnering with charities to share heat safety tips in creative ways — from “paw check” videos to short clips demonstrating safe hydration setups at home.
Backyard Safety and Home Cooling
Even at home, dogs can overheat — especially if they’re left in sun-traps like conservatories, patios, or small gardens without shade. Here are some quick home safety tips:
- Create shaded areas with umbrellas or pet tents.
- Provide cooling mats or damp towels for them to lie on.
- Set up water stations in multiple spots.
- Keep indoor areas cool with fans or air conditioning.
- Limit access to high-temperature areas, like sunrooms or garages.
Some owners are investing in pet-safe fans and mini air conditioners designed for crates and indoor spaces. It might seem over-the-top — until you remember how little it takes to put your dog in danger.
Frozen Treats and Summer Activities
One positive takeaway? The rise in awareness has also sparked innovation. Many pet food companies now offer frozen dog treats, popsicles, and hydration gels.
You can make your own too:
- Frozen chicken broth cubes
- Ice with small treats inside
- Watermelon or banana puree frozen in molds
- Kongs filled with wet food and frozen
Just make sure any treats are dog-safe and sugar-free.
Final Word from the Experts
Heatstroke in dogs is a growing concern as global temperatures rise. As summers become hotter and more unpredictable, pet owners must adjust how they care for their animals.
“It’s about education and prevention,” says Dr. Lawson. “Once you’ve seen a dog suffering from heatstroke, you never forget it. And you never want your dog to go through it.”Owning a dog is one of life’s greatest joys — but it also comes with serious responsibilities. Knowing how to protect your pet from the heat could save their life.
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