The pavement test passed. The walk still left your dog struggling.
That gap is what this article is about. The seven-second test is a useful piece of summer dog safety and is worth keeping. It just is not the whole picture, and a lot of the more serious summer risks for dogs sit outside what the test can tell you.
What the Pavement Test Actually Catches
The test is straightforward. You place the back of your hand on the surface and try to hold it there comfortably for about seven seconds. If you cannot, the surface is too hot for your dog’s paws.
The reason it works is that pavement surface temperatures run far above air temperature on sunny days. When the air reads 86°F, asphalt can reach 135°F. [1] Once a surface hits around 125°F, it can produce burns on a dog’s paw pads in roughly a minute of contact. [1] Darker materials like asphalt hold more heat than concrete, and artificial turf can run hotter than either. The back of a human hand is reasonably sensitive to that radiant heat, so as a quick filter, the seven-second check does its job.
That is what the test is built for. What it does not catch is everything else that can go wrong on a summer walk.
Why Heatstroke Sneaks Up on Dog Parents
Here’s the thing about summer heat and dogs. The bigger concern is not paw burns. It’s heatstroke, and it can develop on a day when the pavement passes the seven-second check with room to spare.
Heatstroke happens when a dog’s body cannot release heat as fast as it is producing or absorbing it. The veterinary definition is a core body temperature above 41°C, which is about 106°F, along with acute systemic inflammation and signs that the central nervous system is starting to struggle. [2] Mortality for diagnosed cases is sobering. Roughly half of the dogs that develop heatstroke do not survive, though early cooling started before the vet arrives can lift those odds meaningfully. [2]
The reason this can sneak up on a dog parent is that dogs do not cool themselves the way people do. Humans sweat across most of the skin’s surface, which moves heat out of the body fairly efficiently. Dogs have sweat glands only on their paw pads, which contribute very little to cooling. Their main tool is panting. [3]
Panting works by moving air across the moist surfaces of the tongue, mouth, and upper airway, where evaporation carries heat away from the body. It works reasonably well in dry conditions. It works much less well in humid air, because the moisture has nowhere to evaporate to. The same temperature can be entirely manageable on a dry day and overwhelming on a humid one. [3]
That is why a walk on a humid 82°F morning can leave a dog in worse shape than a dry 90°F afternoon. The pavement test does not register humidity at all.
Some Dogs Run Into Trouble Sooner
Heat tolerance varies a lot from dog to dog, and recognizing where your dog falls on the spectrum changes how cautious you need to be. The dogs at the top of the risk list often live in homes where their parents do not realize they’re at higher risk until something goes wrong.
Brachycephalic breeds, the flat-faced dogs like Bulldogs, French Bulldogs, Pugs, Boston Terriers, and Boxers, are the most vulnerable. Their airway structure makes panting much less effective at clearing heat, which removes their main cooling tool. A large study of UK dogs found brachycephalic breeds significantly over-represented in heatstroke cases, alongside higher body weights and dogs over two years of age. [4]
Other factors that raise the risk include obesity (excess body fat traps heat), older age, thick or dark-colored coats, dogs with underlying heart or breathing concerns, and dogs that are not yet acclimated to warmer weather. [3] Exertional heatstroke, the kind triggered by exercise rather than just hot ambient conditions, is actually more common in dogs than purely environmental heatstroke, and it can happen at outdoor temperatures most people would not think twice about. [2]
A pavement that passes the test can still cause exertional heatstroke if the dog is in the wrong category and pushed too hard.
What Heat Distress Looks Like Before It Becomes an Emergency
Heat stress sits on a spectrum, and the early signs look a lot like ordinary warm-weather behavior. A dog who is well within their cooling capacity may pant noticeably after exercise, drink more, and want to lie down in the shade. That is normal thermoregulation doing exactly what it should.
The pattern shifts when cooling cannot keep up. Panting becomes heavier and faster, and may not ease even after the dog has stopped moving. Drooling increases. The gums and tongue may take on a brighter red color than usual. Some dogs become restless, others slow down and seem unsteady. These changes often happen gradually enough that they’re easy to miss, particularly if you’re focused on your route or your phone.
Signs that point to a medical emergency are more dramatic. They include:
- Excessive drooling combined with confusion, weakness, or staggering
- Vomiting or gastrointestinal distress including diarrhea, sometimes with blood
- Difficulty breathing or gums that look pale, purple, or bright red
- Collapse, disorientation, or seizures [2][5]
These signals that the body’s cooling systems have been overwhelmed and that organ function may already be affected. The right response is immediate veterinary care, with cooling started before transport whenever possible. Studies suggest that cooling begun by the dog parent before reaching the hospital meaningfully improves survival. [2]
Building a Summer Walking Routine That Actually Works
A better summer safety setup is layered, not a single test. The pavement check stays; it just isn’t the only one; it just sits inside a wider summer safety routine.
Timing matters more than almost anything else. The pavement is at its hottest from late morning through late afternoon, which is the same window when air temperatures peak. Walking in the early morning or after the sun is down sidesteps both the burn risk and the cooling risk in one move. Cornell’s veterinary college recommends planning walks for the early morning or evening hours to avoid the hottest part of the day. [3]
Surface choice matters too. Asphalt absorbs and holds heat far better than grass or shaded dirt paths. A walk that crosses two driveways and stays on grass otherwise is a very different experience for your dog than one that runs along the curb. Looking for routes with shade, soft surfaces, and access to water along the way gives a dog more margin.
Hot cars deserve a separate warning, because they’re a common cause of dog heatstroke and the conditions develop fast. A vehicle parked in 70°F weather can reach over 100°F inside in under thirty minutes, and a car parked on an 85°F day with the windows cracked can climb past 120°F. [5] Those are conditions that produce heatstroke quickly, even in a healthy dog with no other risk factors.
If your dog does start showing signs of heat distress, the response is straightforward. Stop the walk, move to shade or air conditioning, and start cooling actively. Offer small amounts of cool, not cold, water. Wet the chest, belly, and paw pads with cool water. A fan, if you have one, helps evaporation move faster. What you want to avoid is ice water or ice packs, because constricting the blood vessels at the skin’s surface can actually slow heat release from the core. [5] If the signs are progressing or you’re seeing any of the emergency signs above, head to the vet.
The pavement test is still worth doing. It is just not the only check that keeps a dog safe in summer.
A Warmer Note to End On
Summer can be your dog’s favorite season with the right adjustments. Plan around the heat, trust what your dog’s body is telling you, and give yourself permission to cut a walk short or wait for the temperature to drop. The team at Bernie’s Best® is rooting for every safe, easy, tail-wagging summer walk you take this year.
Frequently Asked Questions
How hot is too hot to walk a dog? There’s no single number that applies to every dog, but a useful guideline is to be cautious once air temperatures pass about 85°F, especially in direct sun. At that point, asphalt can climb to 135°F or higher, hot enough to cause paw burns in roughly a minute of contact. [1] Humidity, your dog’s breed and weight, and time of day all change the picture, so the safest approach is to combine the pavement test with attention to those other factors.
How can I tell if my dog is overheating? Mild heat is usually marked by heavy panting, drooling, and a desire to slow down and find shade. The signs that suggest cooling is failing include very heavy or fast panting that does not ease with rest, bright red gums and tongue, unsteadiness, vomiting, or confusion. [2] These warrant immediate cooling and, if they progress, veterinary care.
Are some dogs more at risk for heatstroke than others? Yes. Brachycephalic breeds like Bulldogs, Pugs, and Boston Terriers are at higher risk because their airway structure makes panting less effective. [4] Larger dogs, overweight dogs, older dogs, dogs with thick or dark coats, and dogs with underlying heart or breathing concerns also face elevated risk and benefit from more conservative summer routines. [3]
Can a dog get heatstroke from walking on a normal-looking day? Yes. Exertional heatstroke, the kind caused by activity rather than ambient heat alone, can happen at temperatures most people consider mild, especially when humidity is high or the dog is in a higher-risk category. [2] That is why timing, humidity, and surface choice matter even on days that pass the seven-second pavement test.
What should I do if I think my dog is overheating? Stop the activity, move to shade or air conditioning, and offer small amounts of cool, not cold, water. Wet the chest, belly, and paw pads with cool water, and use a fan if available. Skip the ice water or ice packs, since those can slow heat release rather than speed it up. [5] If your dog is staggering, confused, vomiting, or showing any other emergency sign, head straight to the vet and continue cooling on the way. [2]
References
[1] Harrington WZ, Strohschein BL, Reedy D, Harrington JE, Schiller WR. “Pavement Temperature and Burns: Streets of Fire.” Annals of Emergency Medicine. 1995;26(5):563-568. https://pubmed.ncbi.nlm.nih.gov/7574119/
[2] Bruchim Y, Horowitz M, Aroch I. “Pathophysiology of heatstroke in dogs – revisited.” Temperature. 2017;4(4):356-370. https://pmc.ncbi.nlm.nih.gov/articles/PMC5800390/
[3] Cornell University College of Veterinary Medicine, Riney Canine Health Center. “Summer heat safety tips for dogs.” https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-topics/summer-heat-safety-tips-dogs
[4] Hall EJ, Carter AJ, O’Neill DG. “Incidence and risk factors for heat-related illness (heatstroke) in UK dogs under primary veterinary care in 2016.” Scientific Reports. 2020;10(1):9128. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7303136/
[5] American Veterinary Medical Association. “Warm weather pet safety.” https://www.avma.org/resources-tools/pet-owners/petcare/warm-weather-pet-safety
