PATHOLOGY

Detailed explanation-1: -Most amphibians breathe through lungs and their skin. Their skin has to stay wet in order for them to absorb oxygen so they secrete mucous to keep their skin moist (If they get too dry, they cannot breathe and will die).

Detailed explanation-2: -Most salamanders are like frogs and other amphibians: they start their lives in water, then lose their gills and grow lungs as they mature. As adults, they breathe air and live on land.

Detailed explanation-3: -Species that live on land lose their gills as they grow older. These salamanders develop lungs that are used in breathing, much like breathing in mammals. Other land-living salamanders do not have lungs or gills. These are called lungless salamanders.

Detailed explanation-4: -Many salamanders are born in the water with gills and as they grow they develop lungs and become terrestrial. Some species retain their gills through their life. Salamanders are able to take up oxygen through the skin; the lung-less salamander can also take up oxygen through the membrane of the mouth.