Urgent — same day vet contact Vet now if not resolving in 5–10 minutes; immediately if blue gums or distress

Cat panting in the car or after stress

Brief panting after extreme stress in a fit young cat may settle in minutes; persistent open-mouth breathing in any cat is an emergency.

Cat

Recognise the signs

Mouth open, fast shallow breathing
Panting that doesn't settle within 5–10 minutes
Pale or blue gums — emergency
Crouched hunched posture

First aid steps

Move to a cool quiet space.
Minimise handling.
Dim light.
Phone the vet for any panting that doesn't settle in 5–10 minutes, or any pale/blue gum colour.

Do NOT

Do not chase the cat to comfort.
Do not assume panting is normal in cats — almost never is.

While transporting to the vet

See cat-open-mouth-breathing — careful carrier transport, towel cover.

When to phone the vet immediately

Open-mouth breathing persisting
Blue or pale gums
Collapse

Signs that can usually wait for a routine appointment

Brief panting after extreme stress (vet visit transport home) that resolves within 5–10 minutes in a young healthy cat with normal gum colour can be monitored.

Common causes

Severe stress (car, vet visit, fight)
Heat (rare in UK indoors)
Underlying heart or lung disease unmasked by stress

What the vet will need to know

Stressor identified
Duration of panting
Underlying conditions
Gum colour

Aftercare

Investigate any unexplained panting — heart disease often presents this way.

Prevention

Plan car journeys carefully — Feliway, blanket-covered carrier, low-stress vet practice.
Treat known cardiac disease consistently.

Breed-specific notes

Cardiomyopathy-prone: Maine Coon, Ragdoll, British Shorthair.

Frequently asked questions

Why is panting always concerning in cats?

Cats are obligate nose-breathers. Panting is a sign of substantial stress or compromise — and many panting cats have undiagnosed heart disease.

My cat panted on the car ride home — should I panic?

Brief stress-related panting that resolves in minutes after arrival in a young healthy cat is occasionally seen. Persistent panting, blue gums, or any distress is an emergency.

How do I make car journeys less stressful?

Feliway spray on the carrier blanket, towel cover, smooth driving, classical music, and a calm low-stress vet practice all help.