Why Dogs Pant with Their Tongues Out in Summer
📝 Summary
Dogs can't sweat except through their tongues, so panting is how they dump heat — and flat-faced breeds overheat fastest. Heatstroke is lethal within minutes, so cool a overheating dog with lukewarm water and rush to the vet.
1 Panting and Heatstroke in Dogs
Dogs don’t sweat or slow down when hot; they can’t regulate temperature or drink on their own. Sweat glands sit only on the tongue, so a panting, tongue-out dog is hot and needs water or rest. Short-nosed dogs overheat faster and cool worse.
Normal temp is 37.8–39°C; at 40.65°C organs start failing, and above 41°C is critical. In heat or humidity, a dog’s system can fail and die in as little as 20 minutes — heatstroke is the top warm-weather threat.
Handling Heatstroke
Dogs, cats, and rabbits all show heatstroke signs: rapid panting, restlessness, barking, drooling mean it’s starting; then labored breathing, stretched-neck gasping, or stupor — without action, shock, coma, death.
Dog heatstroke symptoms
Open-mouth gasping with lung noise and foamy drool; wobbly, lost-balance walking; weakness; confusion; then collapse and death.
Act yourself at once — don’t just wait for the vet. Cool fast with lukewarm (never ice) water over the body or a cool bath; ice slows skin circulation and lengthens cooling. Then rush to a clinic; the dog won’t drink on its own, so the vet gives fluids and meds.
On hot days, keep dogs shaded, watered, and never left in a hot space.
Want to learn more about pet health?
Explore our pet health channel for more science-based care guides
Read More Articles →