Suggested slug: `/dog-heatstroke-signs-first-aid/`
Meta description: Learn the early signs of heatstroke in dogs, what to do immediately, how to cool a hot dog safely and when emergency veterinary treatment is needed.
Dog heatstroke is an emergency
Heat-related illness happens when a dog gains or produces more heat than the body can remove.
It can begin with relatively mild overheating and progress to severe heatstroke, organ damage, neurological problems and death.
The important lesson is that owners should act before a dog collapses.
Royal Veterinary College research found dramatically better survival among dogs treated while heat-related illness was still mild than among dogs presenting with severe disease. Royal Veterinary College
What are the early signs of overheating in a dog?
Early signs can include:
- heavy or increasingly frantic panting
- seeking shade or water
- restlessness
- excessive drooling
- red gums or tongue
- slowing down
- reluctance to continue exercising
- rapid heart rate
- appearing uncomfortable or distressed
These signs matter.
Do not wait for collapse before deciding a dog is overheating. RVC heatstroke fact file
What are the more serious signs of heatstroke?
More advanced signs can include:
- weakness
- confusion
- vomiting
- diarrhoea
- difficulty breathing
- poor coordination
- collapse
- seizures
- reduced responsiveness or unconsciousness
At this stage the dog requires urgent veterinary treatment.
What should I do if I think my dog is overheating?
Remember:
Cool first, transport second.
Current RVC guidance recommends beginning cooling immediately rather than putting a dangerously hot dog into a car and delaying cooling until arrival at the veterinary clinic. Royal Veterinary College
Step 1: Stop the exercise
Do not walk the dog home.
Move to shade, air conditioning or another cool, ventilated place.
Step 2: Start cooling
For a young, healthy dog with exertional hyperthermia, cold-water immersion can be highly effective where practical.
For older dogs or dogs with underlying health problems, RVC advice includes pouring water cooler than the dog over the body while using moving air from a fan, breeze or air conditioning.
The objective is to transfer heat away from the dog quickly. RVC heatstroke fact file
Step 3: Contact a vet
Begin cooling and contact a veterinary clinic for advice.
Even a dog that appears better after cooling may need assessment because some consequences of heat-related illness may not be immediately obvious.
Step 4: Continue cooling during transport where advised
Use the vehicle's air conditioning and follow the veterinary clinic's instructions.
Should you use cold water on an overheated dog?
One of the most persistent pieces of outdated advice is that cold water should never be used on a hot dog.
Modern evidence is more nuanced.
Studies of dogs with exercise-induced hyperthermia have found water immersion to be an effective cooling method, including cold-water immersion. RVC guidance now specifically recommends cold-water immersion for suitable young, healthy dogs.
The important point is to start effective cooling rather than losing valuable time debating the perfect water temperature. PubMed study
Should I wrap a hot dog in wet towels?
Be careful.
Water can help cool a dog, but wrapping the body in heavy wet towels can interfere with heat loss once those towels become warm.
Pouring water over the body while creating airflow is usually a more sensible evaporative approach.
Should I put ice packs on a dog with heatstroke?
Do not make ice packs the centre of your first-aid plan.
The strongest practical evidence supports rapid whole-body cooling methods such as water immersion or wetting combined with airflow.
Small cooling products cannot remove heat from an overheated body as quickly as effective whole-body cooling.
Can a dog get heatstroke without being in a hot car?
Absolutely.
The idea that heatstroke is mainly a “dog left in car” problem is dangerously incomplete.
Large-scale veterinary research found exercise to be the leading trigger for canine heat-related illness, while vehicular confinement represented a much smaller proportion of cases. RVC heat-related illness report
A dog can become dangerously hot while:
- walking
- running
- playing fetch
- exercising on the beach
- playing in a garden
- training
- becoming highly excited
- spending time in a hot, poorly ventilated area
Can dogs get heatstroke when it does not feel extremely hot?
Yes.
Exercise produces heat internally.
Dogs with restricted airways may struggle even when conditions feel relatively moderate.
Sudden warm weather can be particularly risky when dogs have not adapted their routine to the change.
Which dogs are most at risk?
Risk is higher in several groups, including:
- brachycephalic or flat-faced dogs
- overweight dogs
- older dogs
- dogs with respiratory disease
- dogs with heart disease
- heavily built dogs
- dogs with thick or double coats
But any dog can develop heat-related illness.
How do you prevent heatstroke?
Most prevention is unglamorous:
- exercise during genuinely cooler periods
- avoid strenuous activity in heat
- consider humidity as well as temperature
- provide water
- provide shade
- avoid hot surfaces
- keep high-risk dogs particularly cool
- allow the dog to stop
- use indoor exercise during extreme weather
In Dubai, indoor exercise is not a luxury during the hottest part of the year. For some dogs it is an important part of responsible summer care.
When should I call an emergency vet?
If you suspect heatstroke, contact a veterinary professional.
Collapse, confusion, seizures, severe breathing difficulty, significant weakness, repeated vomiting or diarrhoea and altered consciousness should be treated as emergencies.
Do not delay urgent treatment while searching the internet for reassurance.
Important: This guide provides general information and does not replace veterinary diagnosis or emergency care.
Start with the pillar guide: how hot is too hot to walk a dog?
Sources and evidence
Every factual claim above is drawn from the following published sources.
This guide is for general information and is not a substitute for veterinary advice. If you are worried about your dog in the heat, contact your vet.