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Frogland - AllAboutFrogs.org
How Ultrasound Works
A rare frog uses ultrasound to communicate, a clever tool that helps it overcome the noise of the waterfalls it lives in, researchers say.The concave-eared torrent frog (Amolops tormotus) is the first non-mammalian species known to use the ultra-high frequencies that humans cannot hear.It joins bats, dolphins and whales, and a small number of rodents, in the elite club of creatures that can communicate this way.
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