ANATOMY

Detailed explanation-1: -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). Oxygen absorbed through their skin will enter blood vessels right at the skin surface that will circulate the oxygen to the rest of the body.

Detailed explanation-2: -But most, like the arboreal salamander and the California slender salamander, don’t have lungs or gills as adults. Commonly called lungless salamanders, they breathe through their skin and the thin membranes in the mouth and throat.

Detailed explanation-3: -Some terrestrial salamanders have lungs used in respiration, although these are simple and sac-like, unlike the more complex organs found in mammals. Many species, such as the olm, have both lungs and gills as adults.

Detailed explanation-4: -Since they lack lungs, all plethodontids breathe through their skin and the mucous membrane in the mouth and throat; these surfaces must remain moist at all times in order to absorb oxygen. All lungless salamanders possess a pair of nasolabial grooves, and each groove extends from the upper lip to a nostril.

Detailed explanation-5: -Salamanders are slimy, but it is for a very good-and fascinating-reason: their skin needs to be moist in order for them to function. The gooey membrane of mucus that they secrete from their skin enables these amphibians’ basic bodily functions-everything from breathing to making their heart beat.