An international team of researchers have discovered seven new species of tree frogs that make otherworldly calls in the rainforests of Madagascar. Their strange, high-pitched whistling calls sound ...
Smithsonian Magazine on MSN
From a Motorcycle Revving to a Pig Oinking, Eight Amazing Sounds Made by Frogs
More than 7,000 species of frogs hop, climb and perch around our world—which means more than 7,000 unique frog calls permeate ...
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