Sex, bodyweight, preferred sitting position (Fig 1) and gait status by age group in 550 pugs. Pugs with an abnormal gait included all pugs perceived by their owners to have a gait abnormality, and all pugs that were reported to wear down their nails and/or the skin on the dorsum of their paws independent of their owner’s perception of the gait. Note that there was a possibility for the owner to include more than one answer or provide no response to a specific question, which is the reason why the numbers in each column may not add up to the total in the adjacent column

VariableOne yearFive yearsEight years
Number of pugs168218164
 Female87 (51.8%)86 (39.4%)60 (36.7%)
 Male69 (41.1%)87 (39.9%)53 (32.3%)
 Spayed female1 (0.6%)19 (8.7%)29 (17.7%)
 Neutered male9 (5.4%)24 (11.0%)16 (9.8%)
 Unknown sex2 (1.2%)2 (0.9%)6 (3.7%)
Bodyweight (kg)8 (IQR=2)9 (IQR=2)9 (IQR=2)
Sitting position (a)41/78 (52.6%)51/148 (34.5%)27/103 (26.2%)
Sitting position (b)37/78 (47.4%)97/148 (65.5%)76/103 (73.8%)
Pugs with a normal gait144/168 (85.7%)149/218 (68.3%)88/164 (53.7%)
Pugs with an abnormal gait24/168 (14.3%)69/218 (31.7%)76/164 (46.3%)