Brachycephalic dog and cat breeds that have stenotic nares have it from birth. A good time to perform an Aesculight CO2 laser stenotic nares correction is at a young age, such as during a routine spay or neuter procedure, without adding a significant increase in anesthesia time. Other BOAS abnormalities, such as an elongated soft palate and laryngeal collapse, could also be assessed and treated at this time.