Dec. 2 (UPI) -- The low-pitched mating call of male koalas has been linked to the presence of an additional sound-producing organ, seen for the first time in land mammals. The pitch of a male koala is ...
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The koala makes a sound that should require a bison-size body. A descended larynx gives it an unusually long vocal tract. Sophie Bushwick reports To vocalize, animals create sound waves in their ...
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