Heatstroke in Dogs - How to Recognize It and What to Do
A hot summer day can be much more exhausting for dogs than it may seem at first glance.
While we humans can cool ourselves quite effectively by sweating, dogs regulate their body temperature differently. They release a large part of excess heat by panting. This usually works well. But at some point, the body can no longer cope with the heat.
That is when a pleasant walk or a short stay in the sun can suddenly turn into a medical emergency.
Heatstroke in dogs should therefore always be taken seriously.
When Heavy Panting Becomes More Than Just Panting
Almost every dog owner knows the situation: after a summer walk, the dog lies down on the cool floor, pants for a while and gradually relaxes.
At first, this is completely normal.
You should pay closer attention if the panting becomes unusually intense, your dog cannot settle down or suddenly behaves differently than usual.
Some dogs desperately look for shade. Others appear weak, react more slowly or barely want to move.
Typical warning signs can include:
very heavy and rapid panting
unusually excessive drooling
restlessness
weakness
very red or unusually dark gums
noticeably rapid breathing
an unsteady gait
vomiting or diarrhea
In severe cases, a dog may stagger, collapse or lose consciousness.
At that point, the situation is life-threatening.
Why Dogs Can Struggle So Quickly in the Heat
Dogs have only a small number of sweat glands.
This means they need to release heat mainly through their respiratory system. When panting, moisture evaporates from the tongue and mucous membranes, helping to cool the body.
At very high temperatures, however, this process becomes less effective.
Humid weather can make things even more difficult. If the air already contains a lot of moisture, less evaporation can take place and the dog is unable to cool down as efficiently.
Physical activity adds another factor.
A dog that runs, plays or jogs alongside a bicycle produces additional body heat. On hot days, that can quickly become a problem.
Many dogs do not recognize their own limits early enough.
Highly playful or energetic dogs in particular may continue long after their bodies actually need a break.
A Parked Car Remains One of the Biggest Dangers
A dog should never be left inside a parked car in warm weather.
Not even for a few minutes.
Not even with the windows slightly open.
And not even if the car is currently parked in the shade.
The temperature inside the vehicle can rise dramatically within a very short time. A dog has almost no way to escape the heat.
The danger is often underestimated because the outside temperature may not even feel particularly extreme.
Inside the car, the situation can be completely different.
For a dog, it can become life-threatening very quickly.
Cars Are Not the Only Danger
Heatstroke can also occur during a perfectly ordinary walk.
Especially when several factors come together.
A hot day, direct sunlight, little shade, intense physical activity and perhaps high humidity as well.
Spending a long time in the garden or on a terrace can also become dangerous if the dog has no cool place to retreat to.
During the hottest part of summer, it therefore makes sense to adjust the daily routine to the temperature.
Take the longer walk in the morning.
Keep afternoon walks short.
And go for another longer walk in the evening once temperatures have dropped.
Some Dogs Tolerate Heat Less Well Than Others
In principle, any dog can overheat.
However, some dogs require particular care.
These include oldr dogs, puppies, overweight dogs and dogs with heart or respiratory problems.
Very thick coats can also make it more difficult for the body to release heat.
Extra caution is needed with short-nosed breeds.
Because of their head shape and shortened airways, breathing may already be more difficult for them under normal conditions. Heat can make this even more challenging.
For these dogs especially, it is better to take a break too early rather than too late.
What Should You Do If Your Dog Is Overheating?
If you feel that your dog has become too hot, do not wait too long.
Move your dog out of the sun immediately.
A shady spot, a cool room or an air-conditioned area is ideal.
Your dog should no longer need to walk or exert itself.
Then you can begin cooling the body down carefully.
Water Helps, but Use It Properly
You can wet your dog’s coat with cool water.
A fan or moving air can also help the body release heat more effectively.
What is less helpful is completely wrapping the dog in wet towels.
These towels can warm up quickly and may then prevent body heat from escaping properly.
Only Offer Water If Your Dog Can Drink Independently
If your dog is conscious, you can offer some water.
However, the dog should be able to drink on its own.
Never try to pour water into the mouth of an apathetic, disoriented or semi-conscious dog. There is a risk that liquid could enter the airways.
And Then See a Veterinarian?
Yes.
If your dog has suffered or may have suffered heatstroke, you should always contact a veterinarian.
This also applies if your dog already seems much better after the initial cooling.
That improvement can be misleading.
Heatstroke can affect the entire body. The cardiovascular system, brain, kidneys, liver and blood clotting can all be affected.
Some problems may not become visible until later.
For that reason, it is sensible to have a dog examined after a serious episode of overheating.
What You Should Avoid Doing
In a situation like this, the natural reaction is to help as quickly as possible.
Even so, there are a few things you should avoid.
For example, do not make your dog walk around in order to “get some fresh air”.
Movement produces additional heat.
You should also never leave the dog alone. Its condition can deteriorate quickly.
And one important point: just because your dog appears more alert again does not automatically mean that the danger has passed.
Hot Roads Are Often Underestimated
Air temperature is not the only thing that matters.
Asphalt can become extremely hot in summer.
Anyone who has ever walked barefoot on a sun-heated surface knows how uncomfortable it can be.
The same applies to a dog’s paws.
A simple test can help: place your hand on the ground for several seconds.
If it feels uncomfortably hot to you, your dog should not walk on it for an extended period either.
When in doubt, choose a shaded route or postpone the walk until later.
Water Should Always Be Part of Summer Walks
On longer walks and day trips, carrying water for your dog should be just as normal as carrying water for yourself.
A small bottle and a foldable bowl take up very little space.
When you are out and about, you often only notice too late that there is nowhere nearby for the dog to drink.
Fresh water should also always be available in the garden.
Ideally, it should be placed somewhere that is not exposed to direct sunlight all day.
Not All Shade Stays Shady
One thing people often forget in everyday life is that shade moves.
A place under a tree or beside a wall may be pleasantly cool in the morning and completely exposed to the sun a few hours later.
If your dog spends longer periods outside, make sure there are several shaded areas available so that the dog can choose where to rest.
Heatstroke and Sunstroke Are Not the Same Thing
The two terms are often used interchangeably.
With heatstroke, the entire body overheats.
With sunstroke, the main problem is intense direct sunlight on the head and neck.
For dog owners, however, making the exact distinction is not the most important thing in an emergency.
If your dog is showing clear symptoms, the priority is simple: get the dog out of the heat and arrange medical help.
How Quickly Can a Dog Overheat?
There is no single answer.
It depends on many different factors.
These include the outside temperature, humidity, physical activity, the dog’s age and overall health.
A young, fit dog does not automatically tolerate every kind of heat.
And an oldr dog does not need temperatures of 35 degrees Celsius before problems can occur.
The overall situation matters.
That is why it makes more sense to watch your dog closely rather than relying only on the number shown on the thermometer.
What Should You Do If You See a Dog in a Hot Car?
This situation can understandably become stressful very quickly.
If a dog inside a parked car is panting heavily, appears apathetic, staggers or no longer responds properly, you should act quickly.
Try to locate the owner.
If there is an immediate danger, contact the police or the relevant emergency services.
What further action is legally permitted depends on the country and the individual situation.
The most important thing is not to simply walk away and hope that the owner will return soon.
Frequently Asked Questions About Heatstroke in Dogs
Is Heavy Panting Always Dangerous?
No.
Panting is a normal part of a dog’s temperature regulation.
It becomes concerning when the panting is extreme or when additional symptoms appear, such as weakness, heavy drooling, staggering or apathy.
Can a Dog Get Heatstroke in the Shade?
Yes.
Even in the shade, high temperatures, humid conditions and physical activity can cause overheating.
Can I Cool My Dog Down With Water?
If your dog is overheating, cooling with water can be helpful.
However, the dog should still be monitored closely and, if heatstroke is suspected, examined by a veterinarian.
Does My Dog Really Need to See a Vet If It Seems Better Again?
If heatstroke is suspected, veterinary advice is recommended.
Internal damage is not always visible straight away.
In Summer, Common Sense Often Makes the Biggest Difference
Many dangerous situations can be avoided with a little planning.
On a hot day, your dog does not need to go on a long hike.
It does not need to run next to a bicycle.
And it certainly does not need half an hour of ball games in the midday sun.
In most cases, simply adjusting the daily routine is enough.
Go out early.
Rest during the hottest part of the day.
Enjoy another walk in the evening.
Plenty of water, shade and regular breaks are often more useful than any special cooling product.
And if your dog seems unusual on a hot day, take a closer look.
Heatstroke in dogs can become serious very quickly. Knowing the warning signs and reacting early can make all the difference in an emergency.
Note: This article is intended for general information only and does not replace a veterinary examination or treatment. If you suspect heatstroke or if your dog is showing serious symptoms, contact a veterinarian or veterinary clinic immediately.