02/23/2026
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A newly published peer-reviewed study has examined the prevalence of Brachycephalic Obstructive Airway Syndrome (BOAS) in 14 additional brachycephalic breeds.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0340604
The findings reinforce an important scientific reality:
β’ BOAS is complex and multifactorial.
β’ Internal airway structure, soft tissues, and genetic factors play major roles.
β’ Visual appearance alone is not a reliable indicator of respiratory health.
Across breeds, higher body condition score and nostril stenosis were also associated with increased risk β highlighting the importance of responsible breeding and weight management.
One important finding stands out:
Extremely flat-faced dogs did not automatically show the highest BOAS prevalence.
Some very short-muzzled breeds had a considerable proportion of unaffected dogs, while certain breeds with more moderate head conformation showed notable levels of disease.
The study supports a breed-specific, evidence-based approach to improving canine welfare.
FCI remains committed to science-driven strategies that protect the health, functionality and future of pedigree dogs worldwide.
