강아지 여름 산책, 몇 도부터 위험할까? — 열사병 예방과 응급 대처 완전 가이드

Is It Dangerous to Walk Your Dog in the Summer Heat? — A Complete Guide to Heatstroke Prevention and Emergency Response

DigestivePreventionMeongsiljang Veterinary Advisory Board

We’ve put together an easy-to-read guide on keeping your dog cool and hydrated during the summer, including safe walking times and tips for preventing heatstroke. Be sure to check the breed-specific precautions as well.

What Is Summer Heat Management for Dogs?

A dog resting in the shade during summer

Walking your dog during the peak heat of the day can be dangerous. What truly matters is acting within the golden hour. Since dogs only have sweat glands in their paw pads, they primarily rely on panting to release heat in hot environments, making them far more vulnerable to heat than humans. Once their body temperature exceeds 41°C, they enter the danger zone for heatstroke, which can lead to organ damage signaled by vomiting, diarrhea, weakness, and decreased consciousness. By avoiding just three things—walking on scorching asphalt at midday, leaving your dog in a parked car, and dehydration—you can prevent most summer emergencies.

What to Check Before Summer Care

If the back of your hand can’t stay on the asphalt for five seconds because it’s too hot, your dog’s paw pads could get burned, too. Also, once a dog’s body temperature exceeds 41°C, it’s already in the heatstroke danger zone and needs immediate action. Brachycephalic breeds (Pugs, Bulldogs, French Bulldogs), senior dogs, overweight dogs, and dogs with heart disease are at higher risk because their airways are narrower or they struggle to dissipate heat, so heatstroke can develop faster than in other dogs. If your dog fits any of these categories, it’s safest to minimize outdoor time throughout the summer and always provide indoor air conditioning.

Managing Safe Summer Walk Times

We recommend summer walks only during the early morning before sunrise (5–7 AM) or in the evening after the sun has fully set (after 8 PM). From 10 AM to 6 PM, asphalt surface temperatures can soar to 50–65°C, significantly increasing the risk of paw burns and heatstroke. Keep walks shorter than usual, under 20–30 minutes, and choose shaded routes. Grass and dirt paths are 10–15°C cooler than asphalt, making them much safer for your pet’s paws.

A dog taking a walk on a grassy path in the early morning.

The Formula for Summer Hydration

Dogs need more water as temperatures rise, and their daily water requirements can double in hot weather. Rather than restricting intake to a set amount, it’s best to ensure they have free access to fresh water at all times. Place water bowls in at least two locations, and always carry a portable water bottle on walks to offer frequent drinks. Insufficient water intake in the heat can lead to dehydration, with common signs including sticky gums and skin that slowly returns to place when pinched. If you notice these signs, move your dog to a cool area, provide water, and closely monitor their condition.

Indoor Cooling and Environmental Management

The ideal indoor temperature for dogs is 22–26°C, with a humidity level of 50–60%. Placing a cooling mat or marble tile in an area not directly exposed to air conditioning airflow can significantly help with temperature regulation. When leaving home, it’s safer to keep the air conditioner running at 27°C rather than turning it off. Never leave your dog alone in a car, even briefly, as the interior temperature can soar to 50°C within 10 minutes after the engine is turned off, even if the air conditioning was on.

Step-by-Step Comparison of Summer Danger Signs

Item	Early warning	Moderate heatstroke	Emergency
Breathing	Panting faster than usual	Tongue out, harsh panting	Respiratory distress/bluish gums
Body temperature	39.5–40°C	40–41°C	41°C or above
Behavior	Limp and lethargic	Drooling heavily/staggering	Seizures/reduced consciousness
Response	Provide shade/water	Wet the body with lukewarm water	Go to the clinic immediately

A body temperature of 41°C or above is a minute-by-minute emergency.

Initial Response Steps for Heatstroke

If you suspect heatstroke, it’s crucial to cool your pet down quickly to prevent their body temperature from rising further. Dampen their belly, paw pads, and the inside of their ears with lukewarm water, wrap them in a wet towel, and use a fan to promote evaporative cooling. However, no single cooling method has been proven superior to others, so rather than aggressively chilling them, focus on consistent cooling while immediately transporting them to a veterinary clinic. Once their body temperature drops to around 39.5°C (103.1°F), stop active cooling to avoid overcooling. Even if they appear to have recovered, internal damage to the kidneys and liver may still be progressing.

A veterinarian lowering a dog’s body temperature with a wet towel

Special Precautions for Brachycephalic Breeds and Senior Dogs

Brachycephalic breeds such as Pugs, Bulldogs, French Bulldogs, and Shih Tzus are particularly vulnerable to heat due to their shortened snouts and airway anatomy. Conditions like narrowed nostrils or an elongated soft palate can easily obstruct airflow, making it difficult for them to dissipate body heat. As a result, they are at risk of respiratory distress during hot weather. For their safety, minimize outdoor walks in the summer and opt for indoor play in air-conditioned environments instead. Senior dogs aged seven years and older, as well as those with heart disease or obesity, are also highly susceptible to heat stress and should be managed with the same precautions. Additionally, dogs with pre-existing medical conditions may struggle even more with thermoregulation, so please consult your veterinarian to develop a tailored summer care plan.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Can I give my dog ice to eat?

A small amount is fine, but giving it in large chunks can cause tooth fractures or gastrointestinal cramps. Crush it finely and float it in the water bowl, or offer just one or two ice cubes as a treat.

Is it better to shave my pet's coat very short in the summer?

In fact, it can have the opposite effect. For double-coated breeds, the outer coat serves as a protective barrier against UV rays and heat, so shaving it increases the risk of sunburn and skin conditions. The best approach is to focus on undercoat care by gently brushing out the loose undercoat.

Do cooling vests and cooling mats actually work?

Cooling mats are highly effective indoors. Cooling vests only work when wet, so you’ll need to re-wet them every 30 minutes during walks to maintain their cooling effect.

Can I give my dog a cold shower right after a walk when their body is still hot?

Instead of dousing your pet with cold water, it’s safer to gradually cool their paws and belly with lukewarm water. No single cooling method has been proven superior, so avoid overcooling. Once their body temperature returns to normal, give them a gentle bath as usual.

Should I reduce my pet’s food intake during the summer?

If your pet’s activity level has decreased, reducing their usual exercise by just 10–15% is sufficient. Offering small amounts of water-rich treats, such as cucumber or watermelon, in place of some of their regular food can help boost their hydration.

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References

[1] Ettinger SJ, Feldman EC, Cote E. Textbook of Veterinary Internal Medicine, 8th ed. Heatstroke and Hyperthermia Chapter

[2] Bruchim Y et al., Heat Stroke in Dogs: A Retrospective Study of 54 Cases, Journal of Veterinary Internal Medicine, 2006

[3] BSAVA Manual of Canine and Feline Emergency and Critical Care, 3rd ed.