Is Your Dog Overheating? 2025 Signs, First Aid & Prevention Tips 🐶✨

By Dr. Duncan Houston BVSc

Dogs don’t sweat like humans do—so when they overheat, it can become dangerous fast. Heatstroke in dogs is a medical emergency that can lead to collapse, organ failure, or death within minutes if untreated.

I’m Dr. Duncan Houston, veterinarian and founder of Ask A Vet. Here’s how to spot the signs of overheating, what to do in an emergency, and how to keep your dog cool and safe in hot weather.

🌡️ What Is Heatstroke in Dogs?

• A life-threatening condition where the dog’s internal temperature rises above 39.5°C (103°F)
• At 41.1°C (106°F), organ damage begins rapidly
• Heatstroke is often fatal without immediate intervention

🔍 Early Signs of Overheating

• Excessive panting or drooling
• Bright red gums or tongue
• Weakness, unsteady walking
• Increased heart rate
• Glassy eyes or anxiety

🚨 Severe Signs – Emergency!

• Vomiting or diarrhea (often bloody)
• Collapse or seizures
• Very pale or blue gums
• Unresponsiveness

🐾 Which Dogs Are Most at Risk?

• Brachycephalic breeds (Pugs, Bulldogs, Boxers)
• Overweight dogs
• Senior dogs or those with heart/respiratory conditions
• Dark-colored dogs or thick-coated breeds
• Dogs left in cars, kennels, or concrete yards

🛑 What to Do If Your Dog Is Overheating

• Move them into the shade or an air-conditioned space
• Wet them with cool (not cold) water, especially on belly, armpits, and paws
• Offer cool water to drink—but don’t force it
• Place a fan near the dog or increase airflow
• Transport to the vet immediately—even if they seem to recover

🚫 What NOT to Do

• Don’t use ice-cold water or ice packs—it can worsen shock
• Don’t delay vet care—internal damage may already be happening

🌞 Heat Safety Tips for Dogs

• Walk early morning or after sunset
• Keep paws off hot pavement (test with your hand for 5 seconds)
• Provide constant shade and fresh water
• Never leave dogs in a car—cracked windows don’t help
• Trim long coats, but never shave double-coated breeds

🧊 Cooling Products and Tools

• Explorer Harness – Light, breathable fabric and minimal bulk for hot walks
• Snuffle Ball – Stimulating indoor activity on days too hot for outdoor play
• Cooling vests, fans, and raised beds can also help

👩⚕️ When to See a Vet

• If your dog shows ANY signs of heatstroke—even mild ones
• After overheating, to check for organ damage or dehydration

📋 Summary Excerpt

Heatstroke in dogs can happen fast—and it’s deadly. A vet shares how to recognize early warning signs, provide first aid, and prevent overheating in summer.

❓ FAQs

• Q: How hot is too hot for a dog walk?
  A: Avoid walking if the temperature exceeds 28°C (82°F), especially for flat-faced or older dogs.
• Q: Can fans cool dogs effectively?
  A: Yes, fans help increase evaporation. Combine them with wet towels or misting for better results.
• Q: Can dogs get heatstroke indoors?
  A: Yes—poor ventilation, high humidity, or confinement in hot rooms can still cause overheating.