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vocal sac
(redirected from vocal sacs)

   Also found in: Encyclopedia 0.01 sec.
vocal sac
n
(Life Sciences & Allied Applications / Zoology) Zoology either of the loose folds of skin on each side of the mouth in many male frogs that can be inflated and act as resonators


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I explained that male Darwin's frogs carry tadpoles in their vocal sacs.
To make a louder croak, many frogs inflate their vocal sacs while calling.
Also, Feng says, video analysis suggests that a double set of vocal sacs contributes to the animals' virtuosity.
 
 
 
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