A West African bullfrog in shallow water can use its skin to both breathe and drink. (Image credit: Tim Platt via Getty Images)
Unlike humans, frogs and other amphibians don't need lungs to breathe; their special skin allows them to exchange oxygen and absorb water. But how do frogs breathe and drink through their skin?
A frog's skin has a complex structure: it is thin, covered with glands that secrete mucus to keep the skin moist, and porous enough to allow air molecules to pass through.
“[Their skin] is designed so that oxygen can get into the skin and water can get in,” Christopher Raxworthy, a curator and herpetologist at the American Museum of Natural History in New York City, told Live Science.
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Sourse: www.livescience.com
