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

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

The belly is white, and the vocal sac is yellow.

From A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico by Duellman, William E.

The specialized vocal sac structure in Phrynohyas and Trachycephalus suggests that these two genera may be rather closely allied and represent a single phyletic line from an ancestral stock similar to Osteocephalus.

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

The vocal sac structure of taurinus differs from that of other members of the genus in that the skin of taurinus forms an everted pouch, which dangles loosely beneath the supratympanic fold.

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