Summer hits. The thermometer keeps climbing. You are sitting in the AC wearing shorts, feeling fine. Your dog is sprawled on the floor, tongue hanging out, breathing heavy like they just ran a marathon — except this breathing is louder than usual. Way more intense.
You might think, “they have a tongue, they pant, they’ll be fine.” But the reality is — heatstroke in dogs is way more serious than most people realize.
I once saw a dog collapse in the yard after 20 minutes of play. It was 90°F outside. By the time we got him to emergency, his body temperature had hit 106°F. He survived. But not every dog does.
Here is what every dog owner needs to know.
Dogs Do Not Cool Down Like You Do
Here is the first thing you need to understand — dogs barely sweat. They have very few sweat glands. Their main cooling mechanisms are panting and a small amount of sweat through their paw pads. Panting works by evaporating moisture from the respiratory tract, carrying heat away with it. But this is not very efficient. Especially in high humidity — when the air is already saturated, evaporation slows down and panting stops working.
In other words, when the temperature goes up, dogs cannot cool themselves down fast enough on their own. They genuinely need you to help them.
Which Dogs Are Most at Risk
Not all dogs handle heat the same way. Some breeds are naturally more vulnerable — brachycephalic breeds (Bulldogs, Pugs, Boston Terriers, Frenchies) have narrowed airways. Their panting is already inefficient. At 77°F, they can start showing signs of heat stress while other dogs are still totally fine.
Dogs with dark coats absorb heat faster. A black or dark brown dog sitting in the sun will heat up quicker than a light-colored one.
Puppies and senior dogs have poorer temperature regulation compared to healthy adults.
Overweight dogs have that extra layer of fat — which acts as insulation, trapping heat inside.
If your dog falls into any of these categories, be extra careful in summer. Shorter outings. Lower intensity. More attention than the average dog needs.
Walk Times — Early Morning and Evening Are the Only Right Answers
Noon walks. That habit needs to go in summer.
Ground temperature in direct sunlight is significantly higher than air temperature. Asphalt and concrete can hit 140°F (60°C) or more on a hot day. Your dog’s paw pads are tougher than human feet, but at that temperature, they burn within minutes.
Here is a simple test: press the back of your hand against the pavement for five seconds. If it feels too hot to hold there, your dog cannot walk on it.
The best times for summer walks are early morning and late evening. The sun is not as intense. Ground temperatures are lower. Also, choose routes with tree cover. Shaded paths are much safer than open, sun-baked streets.
A Few Minutes in the Car Can Kill
I have to say this straight: do not leave your dog alone in a parked car in summer — even for a few minutes.
This mistake happens every single year. A car with windows closed, parked in 86°F weather, can reach 104°F inside in just 10 minutes. In 20 minutes, it can push 122°F. That temperature rise is way faster than most people expect.
If you are driving somewhere and your dog cannot come inside with you — leave the dog at home. It sounds simple because it is.
Keeping Cool Indoors — Beyond Just Turning on the AC
Air conditioning is ideal. But if you do not want to run it all day (electricity bills are real), there are other ways to help:
Fans help, but not in the same way they help humans. Dogs do not sweat through their skin, so the evaporative cooling effect is weaker. You can improve it by placing a bowl of ice water in front of the fan, so the airflow picks up cooler moisture from the surface.
Cooling mats are a solid option — gel-filled or water-based mats that absorb body heat when the dog lies on them. I bought two. My dog used them. Just do not go for the cheapest ones — some have flimsy materials that leak.
Damp towels can be wiped gently on the belly, paws, and inner ears — areas where blood vessels are close to the skin surface. Cool water helps dissipate heat from those areas. A tip: use cool water, not ice water. Ice causes blood vessels to constrict, which actually slows heat release. Cool is better than cold.
Hydration — Do Not Let Them Get Thirsty
In hot weather, a dog’s water needs can double.
At home, keep multiple water bowls around. When you go out, carry a bottle of water and a collapsible bowl. If you see your dog panting heavily on a walk, stop and offer water. Do not wait until you get home.
One small trick: place water bowls in shaded spots. Water stays cooler longer. Dogs drink more when the water is cool, not lukewarm.
Signs of Heatstroke and Emergency Steps
If you see any of these, it is an emergency:
- Loud, heavy breathing — louder and more urgent than normal panting
- Tongue color changes from pink to deep red or even purple
- Thick, sticky saliva
- Wobbling, unsteady on their feet
- Vomiting or diarrhea
- Confusion, disorientation, or collapsing
Immediate action:
- Move the dog to a cool, shaded spot — indoors or under thick shade
- Pour cool water (not ice water) over their body — focus on the belly, armpits, and neck
- Use a fan to blow air over them while they are damp — this speeds evaporation
- Offer small amounts of cool water — do not force it down their throat
- Stop cooling once their temperature drops close to normal (101°F to 102.5°F) — do not overcool
- Get them to a veterinary emergency room — organ damage from heatstroke does not always show up right away. They need to be checked by a professional
Do not use ice packs directly on the skin. Do not dunk them in ice water. That constricts blood vessels and traps heat inside the body.
Final Thoughts
Summer is not just “a bit warm” for your dog. It is a real health risk.
If you adjust your routine — walk them when it is cool, avoid the hottest part of the day, carry water — you can prevent most problems.
Your dog will not complain to you that they are too hot. They will just follow you, even when they are struggling. So the choice is yours. You are the one making decisions for them.
Less direct sun. More fan time. Enough water. Allowed time to rest. None of these take much effort. But they will get you through the summer with a dog that stays safe and healthy.