Lungless salamanders lack lungs and breathe through their skin after they lose their gills.You would expect lungless salamanders to

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Lungless salamanders breathe through their skin, which requires a high surface area to volume ratio to facilitate efficient gas exchange. A smaller or thinner body design increases the surface area relative to the volume, making it easier for these salamanders to absorb oxygen and release carbon dioxide through their skin.

Lungless Salamanders Lack Lungs and Breathe Through Their Skin After