Definition of vocal sac in English:
(In many male frogs) a loose fold of skin on each side of the mouth, which can be inflated to produce sound.
- Sex was determined from the presence or absence of vocal sacs and thumb pads.
- In Rhinoderma darwinii, males retain the tadpoles in their vocal sacs until the young metamorphose.
- There are dads who incubate their babies in their mouths, their vocal sacs, and in pouches.
Definition of vocal sac in:
- US English dictionary
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