Fig. 2

Nostril stenosis grades from FKC BOAS breeding test between 2017 and 2022. FKC: Finnish Kennel Club; BOAS: brachycephalic obstructive airway syndrome. Grade 0 = open, Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe nostril stenosis. For dogs that participated twice (n = 5), only one result from the first test visit is included. aGrade 3: 2%; bGrade 0: 1%; cGrade 3: 3%