VOCAL SAC Definition & Meaning

vocal sac

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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Examples have not been reviewed.

They develop inside his large vocal sac, safely hidden from predators.

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Then, with the help of “a secret neck muscle”, Perry releases from under her chin what looks like a frog’s vocal sac.

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One frog only released the mating sounds; the other also inflated a balloon mimicking the movement of a vocal sac.

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The researchers found that, when they added background noise, the bats chose the frog with the moving vocal sac 75 percent of the time.

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The movement of the vocal sac made them easier to find.

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