Breathing Problems in French Bulldogs (BOAS)
Vet-reviewed via PetHealth+ · Last reviewed June 2026
French Bulldogs are brachycephalic — shortened skulls cause BOAS, with snoring, exercise intolerance, and heat sensitivity. Avoid hot weather and strenuous exercise.
Signs of BOAS
Noisy breathing, gagging, blue gums, collapse in heat.
Surgery
Some dogs benefit from airway surgery — specialist assessment helps.
Heat risk
Never exercise in hot weather; use cooling and air conditioning.
Related: French Bulldog breed guide · Heatstroke in dogs
Frequently asked questions
Why do French Bulldogs snore?
Narrow nostrils and elongated soft palate restrict airflow — part of BOAS.
Can BOAS be cured?
Management and surgery can improve quality of life but anatomy remains compromised.
Are French Bulldogs good running partners?
No — they overheat quickly and cannot cool efficiently.
Should I use a harness?
Yes — collars pressure an already compromised airway.