Puppy breathing fast when sleeping: what is normal and when to worry

A puppy breathing fast when sleeping is usually normal. Puppies breathe faster than adult dogs, and their breathing speeds up when they dream, when they are warm and after a busy spell of play. What matters is whether the fast breathing settles, whether your puppy is otherwise bright and comfortable, and whether you can see any warning signs such as noisy or laboured breathing, pale or blue gums, coughing or collapse.

Do puppies breathe fast while sleeping?

Yes, many do, and rapid breathing during sleep is completely normal for most puppies. Puppies breathe faster than adult dogs due to their faster metabolism: they are growing quickly, so their bodies need more oxygen. On top of that, sleep is not one long, even state. Dogs move between deeper sleep and a lighter, dreaming phase, and breathing naturally speeds up during dreams.

So if your puppy is curled up after a walk or a play session and their chest is rising and falling quickly, with the odd twitch of a paw or a little whimper, they are most likely dreaming. If the rapid breathing comes with effort, noise or distress, that is a different picture, and the sections below explain how to tell the two apart.

What is a normal breathing rate for a puppy?

The PDSA gives a normal resting respiratory rate for dogs of 15 to 35 breaths per minute, measured while the dog is relaxed or asleep but not dreaming. UK vet charities do not publish a separate, agreed resting figure for puppies, although the Royal Kennel Club notes that puppies naturally breathe faster than adult dogs.

Because of that gap, the most useful number is your own puppy's normal. Count their breaths a few times over a week or two while they are in calm, deep sleep and write the results down. If you are unsure whether your puppy's usual rate is fine, ask your vet at their next check-up or vaccination appointment. A clear baseline makes it much easier to spot a real change later, such as a breathing rate that is faster than usual for no obvious reason.

Why is my puppy breathing fast when sleeping?

There are several everyday reasons for a puppy breathing hard when sleeping. Most of them pass within minutes.

Dreaming and lighter sleep

Puppies spend a large part of the day asleep, and some of that time is in the dreaming phase of sleep, known as REM (rapid eye movement) sleep. During dreams their breathing speeds up, and you may also see twitching paws, flickering eyelids or small whimpers. The breathing slows again as your puppy drifts back into deeper sleep. Our guide to how much sleep puppies need explains why plenty of rest matters so much at this age.

Warmth

Dogs do not sweat the way people do, and panting is one of the main ways they regulate their body temperature. A puppy asleep in a sunny spot, next to a radiator or under a thick blanket may breathe faster simply because they are warm. Moving them somewhere cooler should bring their breathing back down.

Play, exercise and excitement

A puppy who has just had a vigorous play session in the garden, met visitors or wrestled with another dog may still be breathing quickly when they flop down for a nap. Excitement, stress or anxiety can have the same effect. Short, gentle sessions suit growing puppies, and our guide on how long to walk a puppy covers how much exercise is right for their age.

Growing fast

Simply being a puppy plays a part. A young, fast-growing body uses more energy and more oxygen than an adult one, which is why puppies sit at a quicker baseline than grown dogs.

When it is not normal

Less often, persistent rapid breathing at rest can indicate an underlying health problem. Underlying conditions that vets consider include respiratory infections such as kennel cough or pneumonia, heart disease (including heart problems a puppy is born with), heatstroke and allergic reactions. Some problems that are not in the lungs at all, such as anaemia, can also make a dog breathe faster. Only a vet can work out which applies. Your vet will examine your puppy and may suggest further diagnostic tests once they are stable, so the aim at home is simply to notice changes and act on them.

How to count your puppy's breaths

Counting breaths takes less than a minute and gives you, and your vet, something concrete to go on. The PDSA method is:

1. Wait until your puppy is relaxed and resting or in deep sleep, not dreaming. Twitching, paddling or whimpering means they are dreaming, so wait.
2. Stay a little distance away so you do not wake or disturb them.
3. Watch the chest or flank. One breath is one rise and one fall of the chest.
4. Count the number of breaths for 15 seconds and multiply by four, or count for a full minute if you prefer.
5. Write down the number, with the date and time.
6. Repeat on different days so you know your puppy's usual range.

A phone timer works perfectly well. If your puppy's resting rate is clearly higher than their normal, or higher than the range above, and they are not warm, dreaming or recovering from play, call your vet for advice.

Normal breathing or a cause for concern?

This side-by-side check can help you decide whether your puppy's breathing patterns are normal or need a vet.

Flat-faced puppies and BOAS

Flat-faced (brachycephalic) breeds such as Pugs, French Bulldogs and Bulldogs need extra attention. Many are affected by brachycephalic obstructive airway syndrome (BOAS), a lifelong and progressive condition caused by narrow nostrils, an overly long soft palate and, in some dogs, a narrow windpipe. Their airways are physically squashed, so breathing takes more effort.

Signs of BOAS that owners often notice first include:

• Snoring, snorting or wheezing, even when awake and at rest
• Heavy or laboured breathing, with the chest and stomach heaving
• Needing to stop and rest on walks
• Snoring during sleep, waking from short pauses in breathing, or sleeping with the head propped up to keep the airway open
• Gums with a blue or grey tinge, which signals low oxygen and needs a vet urgently

It is easy to assume that noisy breathing is just how these breeds sound, but snoring and snorting at rest is a sign of a narrowed airway, not a harmless quirk. If your flat-faced puppy breathes noisily or with effort, talk to your vet early, because early intervention may slow the condition down. Keep them lean, use a harness rather than a collar and avoid exercise in warm weather. The PDSA also advises contacting your vet whenever the breathing of a dog with BOAS changes.

If you are still choosing a breed, the breed guides are a good place to compare face shape and exercise needs, and our flat-faced breed health statistics set out the wider picture.

Panting, heat and heatstroke

Panting in a warm puppy is normal up to a point. Heatstroke is not, and it can kill. In a VetCompass study of more than 900,000 UK dogs, one in seven dogs treated for heatstroke died. Flat-faced breeds were at particular risk: compared with Labradors, Bulldogs had 14 times the risk, French Bulldogs six times and Pugs three times. Flat-faced dogs struggle to cool down because the nose is their main way of losing heat, and they can overheat even in a UK summer.

Dogs Trust lists these signs of heatstroke:

• Heavy panting, even if it eases when they rest (it can look like a "smile")
• Strained breathing that moves the belly
• Lethargy or drowsiness
• Heavy drooling
• Vomiting or diarrhoea
• Collapse

If you think your puppy is overheating, Dogs Trust advises you to stop any activity, move them into the shade and offer water, cool them by soaking their body with cold water (not with wet towels laid over them), put them in front of a fan or in an air-conditioned room, and take them to a vet. If your puppy has collapsed or is struggling to breathe, call your nearest vet immediately.

When to see a vet about your puppy's breathing

Trust your instincts. You know your puppy better than anyone, and vets would much rather hear from you early than late, so seek veterinary advice whenever you are worried. Signs of respiratory distress, meaning real breathing difficulties, should always be treated as an emergency.

Contact a vet immediately if your puppy:

• Is struggling to breathe, or cannot breathe
• Has collapsed
• Has white, grey, pale or blue gums
• Is getting rapidly worse
• Is breathing with obvious effort, with the belly heaving, the neck stretched out or the elbows pushed outwards
• Shows signs of heatstroke
• Starts breathing fast suddenly and severely, for example after a sting, which can point to an allergic reaction

Ring the practice on your way so they can get ready for you. Out of hours, phone your usual practice anyway, as they will usually direct you to their emergency cover.

Book a vet appointment soon if your puppy:

• Breathes fast at rest or in calm sleep, above their usual rate, when they are not warm, dreaming or recovering from play
• Has fast breathing alongside other symptoms, such as tiredness, a runny nose or a cough
• Coughs, has noisy breathing or a change in their bark
• Pants much more than usual, or for longer than usual
• Is a flat-faced breed and snores, snorts or tires quickly on short walks

If your puppy's breathing was fast but settled completely once they calmed down, it may not need emergency care, but it is still worth getting them checked, especially if their breathing seemed faster or noisier than normal.

What to do while you get help

While you arrange help, a few simple steps make a difference:

• Stay calm and keep your puppy calm. Stress makes breathing harder, so speak quietly and handle them as little as possible.
• Keep them cool. Move them out of the sun and away from heaters, and open a window or use a fan.
• Check their mouth for anything stuck. If you can see an object and it is safe and easy to remove, take it out.
• Do not wait to see if it passes when the signs are severe. Get them to a vet.
• Film it if you can do so quickly. A short video of the breathing helps your vet, especially if it has settled by the time you arrive.

Frequently asked questions

Is it normal for a puppy to breathe fast while sleeping?

Yes, in most cases. Puppies breathe faster than adult dogs, and breathing speeds up further during dreams. It should slow down when your puppy settles into deeper sleep.

How many breaths per minute is normal for a puppy?

The PDSA gives a normal resting rate of 15 to 35 breaths per minute for dogs. Puppies often breathe faster than adults, so count your own puppy's breaths during calm sleep to learn their normal, and ask your vet if you are unsure.

Why is my puppy breathing fast and twitching in their sleep?

Quick breaths with twitching paws, flickering eyes or little whimpers usually mean your puppy is dreaming. Let them sleep. If the movements are violent or your puppy does not respond to your voice, film it and call your vet.

Should I wake my puppy if they are breathing fast?

Not if they look comfortable and are simply dreaming. If the breathing is noisy, laboured or comes with pale or blue gums, wake them gently, check them over and call your vet straight away.

Why is my puppy breathing fast while awake and resting?

It is often because they are warm, excited or have just been playing. If the fast breathing does not settle once they have cooled down and relaxed, speak to your vet.

Do flat-faced puppies breathe fast when sleeping?

They can, but loud snoring, snorting or waking from pauses in breathing are signs of BOAS rather than normal puppy sleep. Mention any noisy breathing to your vet early, as early intervention may help.

Is a dog breathing fast when sleeping a cause for concern?

Adult dogs breathe faster when they dream, just as puppies do. A healthy dog's resting rate in calm sleep should sit between 15 and 35 breaths per minute, so a rate that stays above that, or keeps rising, is worth a call to your vet.

Is my puppy breathing fast or just hiccupping?

Hiccups are short, jerky spasms with a little "hic" sound. Fast breathing is a steady, quick rise and fall of the chest. Our guide to puppy hiccups explains why they happen and when they are worth mentioning to a vet.