BOAS
How to Know if Your Bulldog May Have BOAS
Published 2026-06-01.
Common signs of Brachycephalic Obstructive Airway Syndrome in Bulldogs and French Bulldogs, and what an evaluation in Los Angeles can look like.
Brachycephalic Obstructive Airway Syndrome (BOAS) describes a pattern of upper airway changes that can affect Bulldogs and French Bulldogs because of their shortened skull shape. Not every brachycephalic dog has clinically significant BOAS, but many do, and signs can be subtle until they aren't.
This article describes signs to watch for at home, what a breed-experienced evaluation may include, and when surgery may be considered. It is educational only and is not a substitute for examination by a veterinarian.
Clinical diagnostic counters with laboratory analyzers and teal cabinetry. No procedure or graphic imagery is shown.
Signs that may suggest BOAS
Owners often normalize early signs because they appear in many bulldogs. The patterns below, alone or together, are worth a conversation with a breed-experienced veterinarian.
- Noisy breathing at rest, especially snoring or snorting
- Reduced exercise tolerance, slowing down on short walks
- Heat or humidity intolerance, recovery time after activity
- Sleep that is restless, with positional changes to breathe
- Reverse sneezing, gagging, or regurgitation after meals
- Cyanosis (blue gums/tongue), collapse — urgent care, not a clinic visit
Sleep observations that are worth mentioning
Sleep-related behaviors can help a veterinarian understand how much airway effort is present outside the exam room. Patterns owners sometimes notice include head elevation to settle, frequent position changes, sitting or standing rest, and noisy sleep with pauses. These are observations to discuss with a veterinarian — not a home diagnostic checklist.
Educational infographic
Educational infographic. Individual evaluation is required; this figure is not a diagnosis or outcome promise.
Title: When Should I Worry If My Dog Snores? Four panels: falls asleep while sitting or standing; prefers to elevate the head and straighten the neck while sleeping; wakes up repeatedly to change position and clear the throat; holds a toy in the mouth to keep the mouth open. Branding: Sevilla Vet; Los Angeles Bulldog Vet.
What an evaluation may include
A consultation typically starts with a detailed history and a physical exam focused on the nares, palate length when visible, body condition and weight, and signs of GI involvement. Depending on the dog, additional steps may include sedated airway examination, imaging, and discussion of anesthetic risk planning.
Outcomes depend on anatomy, age, weight, severity, diagnostics and anesthetic risk. No single test confirms BOAS in isolation; the picture is built from history, exam and direct visualization when appropriate.
When surgery may be considered
When narrow nostrils or an elongated soft palate contribute to breathing problems, surgery may be appropriate in selected patients. Soft palate resection or shortening and stenotic nares surgery — sometimes called rhinoplasty or nose surgery when owners discuss nostril widening — may be part of that conversation. Surgery is not a guarantee and is one part of a broader plan that often includes weight management and lifestyle adjustments.
When to contact a veterinarian sooner
Seek urgent veterinary care now if your dog is actively struggling to breathe, collapsing, or has blue or pale gums or tongue.
What to bring to a consultation
- Records from your primary veterinarian, including prior diagnoses and medications
- Recent lab work, imaging, or referral reports when available
- Short phone videos of breathing, sleep, eye changes, vomiting, or regurgitation if relevant
- A timeline of when signs started, what makes them worse, and what you have already tried
Related service
If you are looking for an evaluation rather than general education, start with our BOAS and airway consultations page and request a consultation from there or through our contact form.
Related reading
Educational references
Educational information · BOAS. This page does not replace an examination, diagnosis or case-specific treatment plan from a veterinarian.
Ready to plan your bulldog's care?
Request a consultation and our team will follow up to schedule and review records.