As larvae, Salamanders breathe through gills. These gills may be retained by the salamanders as adults. However, most will go through metamorphosis where their gills are replaced by lungs (an exception to this are the lung-less salamanders). Salamanders can breathe through their skin, through which oxygen and carbon dioxide can enter and leave the body.
The salamander order has developed a variety of breathing methods. Some keep their gills breathe underwater, lifelong. Other types grow-up to lose their gills, develop lungs to breathe air. Most, adult salamanders don’t have lungs or gills (“lungless salamanders”) and breathe through their skin and the thin membranes in the mouth and throat.
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