French Bulldog Snoring and Noisy Breathing: When to Worry

Why French Bulldogs breathe noisily

French Bulldogs are brachycephalic, meaning their skull and muzzle are short. The soft tissue inside the nose and throat did not shrink as much as the bones did. The result can be narrow nostrils, a long soft palate, and crowded tissue in the throat. Together these make up brachycephalic obstructive airway syndrome, or BOAS.^[1]

The problem is widespread. A Royal Veterinary College study of 2,781 French Bulldogs under UK veterinary care found they had about 31 times the odds of a BOAS diagnosis and 42 times the odds of narrowed nostrils (stenotic nares) compared with other breeds.^[2]

Researchers in Cambridge measured 604 Pugs, French Bulldogs and Bulldogs and found that stenotic nostrils were associated with BOAS in all three breeds. In French Bulldogs, neck measurements were also linked to risk.^[3]

Normal or not? The warning signs

Because so many Frenchies snore, owners often assume it is part of the breed. The Cambridge BOAS team lists the signs that point to airway disease:^[1]

• Noise while awake, not just during sleep, especially at rest.
• Visible effort: the belly working hard, or the lips pulled back while breathing.
• Poor exercise and heat tolerance: needing to stop and recover after a short walk, or struggling in mild warmth.
• Sleep problems: sleeping sitting up, with the chin propped on a toy, or waking suddenly as if choking (sleep apnea).
• Gagging, regurgitation or vomiting, which often occur alongside BOAS.
• Narrow, slit-like nostrils that pinch closed when the dog breathes in.

A useful home step is to film your dog breathing at rest and after a short walk. A video helps your vet, especially if the noise happens only at certain times. It cannot replace an examination.

When it is an emergency

Go to an emergency vet right away if your dog has:

• Blue, purple or gray gums or tongue (cyanosis)
• Collapse or fainting
• Loud, high-pitched noise with frantic effort to breathe
• Breathing trouble together with heat exposure

Keep the dog calm and as cool as possible on the way. Do not force food, water or exercise.

How vets grade breathing

The University of Cambridge developed a functional grading system based on a three-minute trotting test. A trained assessor listens to the dog's breathing before and after exercise and assigns a grade:^[1]

This system is the basis of the Respiratory Function Grading Scheme run by the Royal Kennel Club and the University of Cambridge. Dogs can be graded from 12 months of age.^[4] In the US, the French Bull Dog Club of America lists this grading as a recommended test for breeding dogs.^[5]

What you can do at home

• Keep your dog lean. Extra weight adds pressure on an airway that is already narrow. Ask your vet for a target weight and feeding plan.
• Use a harness, not a collar, so walks do not press on the throat.
• Avoid heat and humidity. Walk at the coolest times of day and keep indoor spaces cool.
• Keep exercise gentle and steady. Short, calm walks are better than intense play.
• Track changes. Note when noise gets louder, when recovery takes longer, or when sleep gets worse, and share it with your vet.

Treatment options, including surgery

For dogs graded II or III, the Cambridge team recommends management that may include weight loss and surgery.^[1] Common procedures widen the nostrils and shorten an overlong soft palate. Some dogs also need tissue removed from the throat.

Many surgeons prefer to operate before years of strain cause further changes in the throat. Ask your vet whether your dog should be referred to a surgeon who regularly treats brachycephalic dogs. Surgery improves breathing for many dogs, but it does not turn a short-faced dog into a long-faced one, so weight and heat management stay important for life.