Signs of Heatstroke in Dogs You Shouldn’t Ignore

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When the sun is out, most dogs love to play, run, or just lay in the yard soaking up the warmth. But sometimes, that same sunshine can be dangerous. Heatstroke in dogs is not only serious, it can be fatal in less than 15 minutes if ignored.

Let’s break down what you need to know, what signs to watch for, and how to keep your furry friend safe.


What Exactly Is Heatstroke in Dogs?

Heatstroke happens when a dog’s body temperature rises above normal and their cooling system can’t keep up. Unlike us, dogs don’t sweat much. They mostly rely on panting, but panting alone isn’t always enough, especially in hot or humid conditions.


Common Signs of Heatstroke

If your dog is showing any of these signs, you need to act quickly:

  • Heavy panting that doesn’t slow down
  • Excessive drooling
  • Bright red tongue or gums
  • Weakness or stumbling when walking
  • Vomiting or diarrhea
  • Seizures or collapsing

It’s scary, but knowing these warning signs early could save your dog’s life.


How Fast Can Heatstroke Kill?

Sadly, it doesn’t take long. In severe heat, dogs can suffer organ failure and die in under 15 minutes. This is why recognizing the early signs is so critical.

Here’s a quick table for clarity:

Time in HeatPossible Effect
0–5 minutesHeavy panting, restlessness
5–10 minutesWeakness, drooling, vomiting
10–15 minutesCollapse, seizures, possible death

Which Dogs Are at Higher Risk?

All dogs can get heatstroke, but some are more vulnerable:

  • Puppies & Seniors – less ability to regulate temperature
  • Flat-faced breeds (Pugs, Bulldogs) – breathing issues make cooling harder
  • Overweight dogs – extra weight traps more heat
  • Active breeds – they push themselves harder outdoors

First Aid Steps if You Suspect Heatstroke

Don’t wait. If you see warning signs:

  1. Move your dog to a cool, shaded place immediately.
  2. Offer small amounts of cool (not ice-cold) water.
  3. Wet towels with lukewarm water and place them on belly, armpits, and paws.
  4. Use a fan if available.
  5. Get to a vet as fast as possible.

Never dump freezing water or ice directly on your dog—it can shock their system.


How to Prevent Heatstroke in Dogs

Prevention is always better than emergency care. Simple steps include:

  • Walk your dog early morning or late evening, not mid-day.
  • Always provide shade and plenty of fresh water.
  • Never leave your dog in a car, even for a few minutes.
  • Keep outdoor activity short when temperatures climb.

Conclusion

Heatstroke in dogs is one of those emergencies that gives no second chances. By paying attention to the warning signs—like heavy panting, drooling, or weakness—you can step in before it’s too late. Remember, just a few minutes in extreme heat can mean the difference between life and death. Your dog relies on you to notice when something is wrong, and staying alert during hot days is the best gift you can give them. Keep water handy, avoid overexertion, and always err on the side of caution.

Emma Olson

About The Author

I'm Emma and I love dogs so much, especially poodles. I have a miniature Poodle named Olive. Pets are my passion and I love to share knowledge through writing blogs.