This is because of their short snouts, which make them more likely to have breathing problems at night as they have to work harder to breathe using their relatively
shorter air passages.
These brachycephalic breeds have
shorter air passages than other dogs and have to work harder to breathe in some cases.
These brachycephalic dogs have flat faces and
short air passages.
Not exact matches
In contrast to a trombonist, who pushes the slide out or pushes it in, making
air take a longer or
shorter route to get to the bell, a singer must modulate the
passage of breath with a series of mostly unconscious physical movements.
Above 5200 rpm, however, a rotary valve in the bore of the
short runner opens to allow the
passage of additional
air to the cylinder.
We have very
short nasal
passages, which means that the
air does not have time to cool down before it reaches our lungs.
The Humane Society of the U.S. says
air travel can be risky for pets and especially dangerous for brachycephalic breeds — such as pugs or bulldogs, whose
short nasal
passages make them vulnerable to oxygen deprivation and heat stroke.