vocal sac

British  

noun

1. 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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Example Sentences

See Examples For:

vocal sac

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

From The Guardian ● Jun. 12, 2017

During breeding, the male’s vocal sac, almost as large as the animal itself, is usually the first thing you will spot.

From New York Times ● Apr. 3, 2015

Osteologically, Osteocephalus more closely resembles Phrynohyas than either of the other two genera, but Osteocephalus and Phrynohyas are clearly distinct on the basis of their respective vocal sac structure.

From A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus by Duellman, William E.

The vocal sac is moderately large and bilobed.

From Neotropical Hylid Frogs, Genus Smilisca by Duellman, William E.

Both have the same kind of, and variation in, dorsal markings; conical, pigmented supernumerary tubercles on the toes; bilobate vocal sac; and large prepollex bearing horny nuptial spinules.

From Descriptions of New Hylid Frogs From Mexico and Central America by Duellman, William E.