Why is my cat panting?
Cats do not normally pant the way dogs do, so panting at rest is usually a sign of something worth paying attention to, whether that is heat, stress, exertion, or in some cases a more serious health issue. A cat who pants briefly after a stressful car journey is different from one panting at rest for no obvious reason, and the second is the one that needs a vet.
Usually not urgent
This is common and often manageable at home — but see a vet if it persists, gets worse, or comes with other changes.
Why panting means more in a cat than a dog
Dogs pant routinely to cool down after exercise or in heat, and it is a normal part of how they regulate their temperature. Cats rely on this mechanism far less, which is exactly why panting in a cat is a less familiar and more noteworthy sign than it is in a dog.
That does not mean every instance is serious — a cat can pant briefly from genuine overheating, extreme exertion, or acute stress, such as a car journey or a vet visit, and settle quickly once the trigger passes. Panting that continues at rest, without an obvious recent cause, is the pattern to take seriously.
What can cause it
Heat and stress are the two most common everyday triggers, and a cat who has just had a stressful experience — travel, a vet visit, an encounter with another animal — panting briefly afterwards is not unusual. It should settle within a short time once the cat is calm and comfortable again.
Panting can also be a sign of pain, respiratory difficulty, or heart problems in cats, including conditions that affect the heart muscle. None of these can be told apart from home observation alone, which is why persistent or unexplained panting needs a vet's assessment rather than a guess.
Red flags that need same-day attention
Contact your vet the same day if your cat is panting with an open mouth for more than a few minutes without an obvious trigger, seems distressed, has pale, blue or grey gums, or is breathing rapidly even without panting. Any of these can indicate a genuine breathing or heart problem.
A cat who has collapsed, seems extremely lethargic, or is panting alongside vomiting or reluctance to move needs to be seen straight away rather than monitored at home, since these combinations point towards something more serious than stress or heat alone.
Managing stress-related panting
For a cat who reliably pants during car journeys or vet visits, a secure, well-ventilated carrier that your cat is already familiar with before travel day can reduce the acute stress that triggers it, since a carrier that only appears on stressful occasions becomes a stress signal in itself.
Calming products, such as a pheromone-based spray used in the carrier ahead of time, can help some cats settle for a known, predictable stressor like travel. This is only appropriate once you are confident the panting is stress-related rather than a symptom needing veterinary attention.
What a vet visit for panting involves
A vet assessing a panting cat will typically listen carefully to the heart and lungs, check gum colour and general alertness, take a temperature, and ask about how long the panting has been going on and what, if anything, seemed to trigger it. None of this is painful or invasive for your cat.
Depending on what that initial examination finds, further tests such as blood work or imaging may be recommended to look more closely at heart or lung function. Bringing a note of when the panting happens, how long it lasts, and anything else you have noticed helps the vet build a clearer picture from the outset.
What can help
Things we stock that owners commonly use alongside a vet’s advice — not a substitute for it.
Replacement Cage Lid Pin (33cm)
A genuine spare lid pin for folding cages — 33 cm in length, so your cage stays secure when the original goes walkabout.
£6.49
Spare Short Pin for Folding Cage
A spare short pin for the folding cat cage — so a missing pin doesn't put your cage out of action.
£5.99
3-in-1 Folding Pet Stroller with Removable Carrier
A folding pet stroller whose carrier lifts out to use on its own, giving small, senior or recovering pets a wheeled ride to the vet and back home again.
£115.99
Johnson's Calm Eze Tabs
36 herbal tablets to help calm and soothe nervous or hyperactive dogs and cats
£6.05
Common questions
- Is it normal for cats to pant?
- Not in the way it is for dogs. Cats rely far less on panting to cool down, so panting at rest without an obvious cause like heat, stress or recent exertion is worth taking seriously rather than assuming it is normal, and is a reason to get your cat checked.
- Can stress make a cat pant?
- Yes, a stressful event such as a car journey, a vet visit or an encounter with another animal can cause a cat to pant briefly, and it should settle once the cat is calm again. Panting that continues well after the trigger has passed is worth a vet's opinion rather than waiting it out.
- What colour should a cat's gums be?
- Normally a healthy pink. Pale, blue, or grey gums alongside panting are a red flag that suggests a breathing or circulation problem and need same-day veterinary attention rather than waiting to see if things improve on their own.
- How can I stop my cat panting in the car?
- Getting your cat used to a secure, well-ventilated carrier outside of travel days, rather than only bringing it out for stressful journeys, can reduce the anxiety that triggers panting. A pheromone-based calming product used in the carrier ahead of time can help some cats settle for a known stressor like travel.
- Can hot weather alone cause a cat to pant?
- Yes, on a genuinely hot day a cat can pant briefly to help regulate their temperature, and this should settle once they have cooled down and rested somewhere shaded. Panting that continues well after your cat has had a chance to cool off is worth checking with your vet rather than assuming heat is still the cause.
- Do flat-faced cat breeds pant more easily?
- Some flat-faced breeds have narrower airways and can be more prone to noisy breathing or panting with less exertion than other cats. If your cat is a flat-faced breed and pants more readily than seems typical, it is worth mentioning at a routine check-up so your vet can assess their airway specifically.
Related
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Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.