With temperatures rising across much of the country—including right here in Greenville, South Carolina—hot weather is no longer just a comfort issue for pets; it is a genuine health risk. Dogs, in particular, have limited ways to regulate their body temperature, relying mainly on panting and small amounts of heat release through their paws. In sustained heat or humidity, those natural cooling systems can fail quickly.
Veterinary experts and reporting such as BBC News have highlighted that heat-related illness in pets is both fast-moving and largely preventable when owners know what to look for and act early.
Heatstroke happens when a dog’s internal temperature rises beyond its safe range—typically around 104°F (40°C) or higher—and the body can no longer cool itself effectively. Once this happens, the condition can escalate rapidly and begin affecting organs, making it a medical emergency rather than a condition to monitor at home.
Early warning signs often begin subtly but worsen quickly. Excessive panting that doesn’t ease, thick drooling, and obvious restlessness are common early indicators. Dogs may also appear disoriented or unusually lethargic, with bright red gums that may later turn pale or bluish as oxygen circulation becomes compromised. As heatstroke progresses, symptoms can include vomiting, diarrhea, a rapid heart rate, wobbliness, collapse, or even seizures.
Because heatstroke develops quickly, immediate response matters as much as recognition. If you suspect overheating, the priority is to lower your dog’s body temperature safely and without shock to the system. Move them immediately into shade or, ideally, an air-conditioned space. Begin cooling them with cool—not ice-cold—water applied to areas like the belly, paws, and neck while providing airflow from a fan. Ice water should be avoided because it can cause blood vessels near the skin to constrict, which may actually slow internal cooling. Offer small amounts of fresh drinking water if the dog is conscious and able to swallow, but do not force it. At the same time, contact an emergency veterinarian immediately, even if your dog appears to improve, as internal complications can continue to develop.
Prevention is far easier than treatment. Walk dogs during cooler parts of the day, such as early morning or late evening, and avoid strenuous exercise in high heat or humidity. Always check pavement temperature before walks—if it’s too hot to hold your hand on comfortably, it is too hot for paws. Provide constant access to shade and fresh water, and never leave dogs in parked cars, even for a few minutes.
Certain dogs face higher risk, including brachycephalic breeds like Bulldogs and Pugs, older dogs, overweight pets, and those with heart or respiratory conditions. Even healthy dogs can overheat quickly in extreme conditions.
For added awareness during heat waves, owners can consult the CDC HeatRisk Dashboard to understand local risk levels on particularly hot days. The American Veterinary Medical Association also provides practical guidance on warm-weather safety at its AVMA Warm Weather Pet Safety page.
In Greenville’s humid summer climate, vigilance is essential. Recognizing early signs and responding quickly can be the difference between a full recovery and a life-threatening emergency.