Is it normal for cats to snore?

Soft snoring during deep sleep is common in many cats — especially if head is tilted or airway partially relaxed. Loud snoring, snoring that is new, or snoring with breathing effort while awake needs vet assessment.

Why does my cat snore loudly?

Obesity narrowing the airway, brachycephalic (flat-faced) breeds, nasal congestion from cat flu, polyps, or asthma can cause loud snoring. Overweight cats are a common UK cause.

When is cat snoring a problem?

See your vet if snoring is new, your cat gasps or breathes with an open mouth when awake, has blue/grey gums, reduced exercise tolerance, or nasal discharge with sneezing.

Can obesity cause snoring in cats?

Yes — excess fat around the upper airway contributes to snoring and increases risk of diabetes and joint disease. Weight loss often improves breathing noise.

Cat Health

Why Does My Cat Snore UK? Normal Sleep vs Breathing Problems

Published 25 June 2026Last updated 25 June 20263 min read

Quick answer

Soft snoring during sleep is often normal in UK cats — especially relaxed or slightly overweight pets. New loud snoring, snoring while awake, open-mouth breathing, or effortful breaths need vet checks for obesity, upper respiratory disease, or asthma. Never ignore sudden breathing change.

Normal cat snoring

Many cats make quiet rhythmic snores in deep sleep when:

Head is bent forward compressing airway slightly
They sleep in warm, curled positions
They are deeply relaxed after play

No other symptoms — normal appetite, playful when awake, quiet breathing when active — usually reassuring.

When snoring suggests a problem

Book a vet appointment if:

Sign	Possible concern
New snoring in a previously quiet cat	Nasal polyp, mass, or weight gain
Loud snoring every sleep	Obesity or airway narrowing
Open-mouth breathing when awake	Emergency — see Cat panting
Nasal discharge + sneezing	Cat flu or chronic rhinitis
Wheezing or effort when active	Feline asthma
Blue or grey gums	Oxygen emergency

Common causes in UK cats

Obesity

According to the PDSA, many UK cats are overweight. Fat around the neck and chest narrows airways — snoring improves with weight loss.

Brachycephalic breeds

Persian, Exotic Shorthair, and other flat-faced cats have short nasal passages — snoring is common; still monitor for worsening effort.

Upper respiratory infection

Congestion from cat flu causes temporary snoring until infection clears.

Nasal polyps and foreign bodies

Young cats may develop inflammatory polyps — one-sided discharge, head shake, snoring.

Feline asthma

Middle-aged cats may wheeze and cough — sometimes mistaken for snoring. Requires veterinary diagnosis.

Snoring vs sleep apnoea

True sleep apnoea (pauses in breathing during sleep) is rare but serious in cats. Video your cat sleeping if episodes look like long silent gaps followed by gasping — show your vet.

What your vet may do

Weight assessment and body condition score
Oral and pharyngeal exam
Listen to lungs
Imaging or rhinoscopy if polyps suspected
Trial treatment for asthma or congestion if indicated

Home management for benign snoring

Help weight loss if overweight
Reduce dust — litter choice affects airways
Provide cool, ventilated sleeping spots
Avoid smoke and strong sprays

Sources & further reading

Facts in this guide are rewritten in plain English from publicly available UK advice. We name the organisation where a specific point comes from their guidance. Links below go to the original pages — use them to read the source material directly.

PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Guidance checked against sources listed below (last updated 2026-06-25).

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Frequently Asked Questions

Is it normal for cats to snore?: Soft snoring during deep sleep is common in many cats — especially if head is tilted or airway partially relaxed. Loud snoring, snoring that is new, or snoring with breathing effort while awake needs vet assessment.
Why does my cat snore loudly?: Obesity narrowing the airway, brachycephalic (flat-faced) breeds, nasal congestion from cat flu, polyps, or asthma can cause loud snoring. Overweight cats are a common UK cause.
When is cat snoring a problem?: See your vet if snoring is new, your cat gasps or breathes with an open mouth when awake, has blue/grey gums, reduced exercise tolerance, or nasal discharge with sneezing.
Can obesity cause snoring in cats?: Yes — excess fat around the upper airway contributes to snoring and increases risk of diabetes and joint disease. Weight loss often improves breathing noise.