Brachycephalic Airway Syndrome in Dogs: 2025 Welfare Update

Brachycephalic obstructive airway syndrome (BOAS) remains one of the most significant inherited welfare crises in companion animals, with ongoing efforts to reduce the prevalence through breeding reform and public awareness.

Key Facts

BOAS affects breeds including Bulldogs, Pugs, French Bulldogs, Shih Tzus, and Boston Terriers
Clinical signs include noisy breathing, exercise intolerance, regurgitation, and sleep apnoea
An estimated 50% or more of French Bulldogs experience clinically significant BOAS
Surgical correction can improve welfare but does not reverse underlying conformational abnormalities
As of 2025, the KC, FCI, and international breed clubs are implementing conformation scoring requirements

Welfare Considerations

BOAS causes lifelong respiratory compromise and distress. Affected dogs cannot breathe normally during exercise, in warm weather, or even at rest. The condition is entirely caused by human-selected extreme conformation. Breeding to exaggerate skull flattening for aesthetic reasons has produced a generation of dogs that suffer as a result. The welfare case for urgent breeding reform is overwhelming, and public purchasing decisions directly influence which conformations are commercially viable.

What You Can Do

Do not purchase puppies with extreme flat-faced conformation that compromises breathing
Support breed clubs and registration bodies that enforce BOAS grading before breeding
Ask breeders to demonstrate that parents have passed respiratory function grading
Advocate for public education campaigns that link extreme conformation to animal suffering