Same as other mammals- they use lungs.
Diaphragm
Paired nares are holes in the snout of the pig that facilitate breathing
The ribs are linked by the intercostal muscles. These open and close the ribcage to cause breathing.
I think your guinea pig is dieing. I am part of a 4-H group and I study rabbits and guinea pigs. My rabbit died last year and had the same syptoms.
There are many advantages of a pig farming system. One such advantage of a pig farming system is their dung which makes an excellent pond fertilizer.
Method of Breathing was created in 2002.
The Buteyko method strives to remove the bad habits of over-breathing and to replace them with new habits of slower, shallower breathing, called "reduced breathing."
Diaphragm
It is by air bubbles.
gills and lungs
Paired nares are holes in the snout of the pig that facilitate breathing
its in shock
Walking, trotting or running.
they breath through their lungs
Diffusion through skin.
they breath out of their eye holes
Reptiles breath using lungs.