Heatstroke in Cats: 9 Warning Signs, First Aid and Prevention
Heatstroke in cats is a life-threatening emergency. If your cat is panting, drooling or wobbly on a hot day, move them somewhere cool, wet their fur with room-temperature water and call your vet straight away. The Animal Referral and Emergency Network (AREN) warns that heatstroke can cause organ failure, seizures or death if it isn’t treated quickly.
In short: cats overheat less often than dogs, but it happens. Know the signs, cool your cat safely, and see a vet even if they seem to recover.
What is heatstroke in cats?
Heatstroke happens when your cat’s body temperature rises well above its normal range and the body can’t cool itself down. RSPCA Queensland explains that this can injure tissue and cause organ failure.
AREN describes three stages:
| Stage | What you might see |
|---|---|
| Heat stress | Panting, thirst, mild tiredness |
| Heat exhaustion | Vomiting, diarrhoea, weakness |
| Heatstroke | Collapse, seizures, organ failure |
According to AREN, heat stress can begin once temperatures climb above 25°C, especially when it’s humid.
9 warning signs of heatstroke in cats
AREN and RSPCA Queensland list these signs. Watch for:
- Excessive panting or drooling
- Bright red gums and tongue
- A fast heart rate
- Restlessness or anxious pacing
- Vomiting or diarrhoea
- Weakness or wobbliness
- Blue or grey gums
- Confusion, tremors or seizures
- Collapse or loss of consciousness
Signs 1 to 4 are early warnings. Signs 5 to 9 mean your cat needs a vet now.
Which cats are most at risk?
Any cat can overheat. AREN lists these cats as more likely to suffer heatstroke:
- Long-haired breeds
- Senior cats
- Flat-faced (brachycephalic) breeds
- Overweight cats
- Cats with existing medical conditions
Cats usually find cool spots to hide, but they can’t escape the heat when they’re shut in a room or sunroom without airflow, stuck in direct sun, or left in a car. AREN notes that a parked car can pass 40°C within minutes, even on a mild day.
First aid for heatstroke in cats
To cool your cat safely, follow these steps from AREN and RSPCA Queensland:
- Move your cat to a cool, shaded, well-ventilated spot.
- Wet their fur with room-temperature or tepid water. Don’t use ice or iced water, because it can make things worse.
- Use a cool, wet towel on the head, neck, belly, inner thighs and paw pads. Swap it for a fresh one often, because a towel left in place heats up.
- Turn on a fan to boost the cooling effect.
- Offer small amounts of cool water. Don’t force your cat to drink.
- Call your vet or the nearest emergency vet and head there while you keep cooling.
Go to the vet immediately if signs are severe or getting worse, your cat collapses, vomits or has a seizure, or there’s no improvement after a few minutes of cooling.
Why your cat needs a vet even if they seem fine
Heatstroke can damage organs without obvious signs at first. RSPCA Queensland warns that organ failure and damage can appear later, so a vet should check your cat even if they seem to bounce back. AREN says mild cases usually recover in 24 to 48 hours, while severe cases can take weeks under vet care.
How to prevent heatstroke in cats
Most cases of heatstroke in cats are preventable. On hot days:
- Give your cat a cool, shaded, well-ventilated place to rest.
- Keep fresh water available at all times, with a spare bowl in case one spills.
- Bring outdoor cats inside if it’s cooler indoors, and keep air moving with fans or air conditioning.
- Offer a cooling mat or a damp towel to lie on.
- Brush long-haired cats regularly so their coat doesn’t trap heat.
- Check that sunrooms, laundries and garages your cat can get into don’t overheat.
- Never leave your cat in a parked car, even with the windows down.
Dogs face the same summer risk. Our guide to heatstroke in dogs covers the signs and first aid for your canine family members. Summer and Christmas also bring other cat hazards, such as lilies in festive bouquets. If your cat is vomiting after a hot day, see our guide to cat vomiting.
FAQ
Do cats get heatstroke?
Yes. Cats get heatstroke less often than dogs, but long-haired, senior, overweight and flat-faced cats are at higher risk, as are cats shut in hot rooms or cars.
What should I do if my cat is panting on a hot day?
Treat panting on a hot day as an early warning sign. Move your cat somewhere cool, wet their fur with room-temperature water and call your vet.
Can I use ice to cool down my cat?
No. Use room-temperature or tepid water, not ice or iced water. AREN and RSPCA Queensland both warn that ice-cold water can make heatstroke worse.
How long does it take a cat to recover from heatstroke?
AREN says mild cases usually recover in 24 to 48 hours. Severe cases can take weeks of vet supervision.
What temperature is too hot for cats?
AREN says heat stress can begin above 25°C, especially with humidity. Watch your cat closely on any hot or humid day.
Be ready for the unexpected
Emergency vet care for heatstroke can add up. Find out how cat insurance could help with unexpected vet bills.
Sources
- Animal Referral and Emergency Network (AREN): Heat stroke in pets
- RSPCA Queensland: Heatstroke and staying cool
This article is general information only and isn’t a substitute for advice from your vet. If you’re worried about your cat, contact your vet.