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Without lungs, breathing 100% through its skin and completely dependent on humidity, Desmognathus fuscus defies biology by surviving with a respiratory system that seems impossible for a terrestrial vertebrate
2+ day, 10+ hour ago (468+ words) Instead, all the oxygen necessary for its survival is obtained by cutaneous respirationThat is, directly through the skin and mucous membranes of the mouth. It is not a respiratory supplement " it is the animal's only means of gas exchange. The…...