Tightness around the ribcage can be caused by broken ribs, pulled or strained muscles, or fluid in or around the lung or heart.
Anxiety
chicken fat
Swelling, mainly from a virus or a bacterial infection.
If you Feel around the bottom of your ribcage the diaphragm is around there :)
Stress, in some shape or form.
Ferrets do have a ribcage
the diaphragm relaxes and that causes the ribcage to compress (get smaller) this pushes air out, and you have exhailed
tightness in a muscle
that means your ribcage is open and is showing
The lungs will expand and the diaphragm will pull down to let air come in. The ribcage will also expand out for more room.
The lungs will expand and the diaphragm will pull down to let air come in. The ribcage will also expand out for more room.