The Southern Cassowary (like all birds) has a pulmonary system where the lungs and the mouth are all connected.
Lungs it's a mammal like us
Whales use the mouth and blowhole to breathe.
Gills.............
The organ responsible for breathing is your lungs.
lungs
Just like humans, squirrels contain lungs, the major breathing organ in the respiratory system.
Organ
lungs
Gills
Gills
Lungs
nose