If your pet is in immediate danger, call your vet or emergency animal hospital NOW. ASPCA Poison Control: (888) 426-4435 | Pet Poison Helpline: (855) 764-7661
Heatstroke in Pets
Heatstroke (hyperthermia) occurs when a pet's body temperature rises dangerously above normal (above 104°F / 40°C). Dogs and cats cannot cool themselves as efficiently as humans because they primarily rely on panting. Heatstroke can cause organ failure and death within minutes. Brachycephalic breeds (flat-faced breeds like Bulldogs, Pugs, and Persian cats) are at highest risk.
Symptoms to Watch ForWarning Signs
- Excessive panting and drooling
- Bright red tongue and gums (may progress to pale/blue gums)
- Rapid heart rate
- Vomiting and/or diarrhea (may contain blood)
- Wobbling, disorientation, or stumbling
- Lethargy or collapse
- Seizures
- Loss of consciousness
Immediate First AidAct Now
- 1Move your pet to a cool, shaded area or air-conditioned room immediately
- 2Apply cool (NOT ice cold) water to the body, focusing on the neck, armpits, and groin
- 3Place cool, wet towels on your pet and replace them frequently (they heat up fast)
- 4Offer small amounts of cool water to drink — do not force water
- 5Direct a fan at your pet while they are wet to enhance evaporative cooling
- 6Do NOT use ice or ice-cold water — this constricts blood vessels and can worsen the condition
- 7Transport to the vet immediately, even if your pet seems to be recovering
When to Call the Vet
- Always — heatstroke is a medical emergency that requires professional treatment
- Begin cooling measures while preparing to transport to the vet
- Internal organ damage can occur even after the body temperature returns to normal
- Your pet will likely need IV fluids, blood work, and monitoring for secondary complications
Additional Information
Never leave a pet in a parked car — even with windows cracked, the temperature inside a car can reach 120°F within minutes on a 70°F day. Highest risk groups: brachycephalic breeds, overweight pets, senior pets, pets with heart or respiratory disease, and very young animals. Exercise your pet during the coolest parts of the day (early morning or evening).