The vocal sac is the flexible membrane of skin possessed by most male frogs and toads. The purpose of the vocal sac is usually as an amplification of...

comparable anatomical structure that is referred to as either a gular sac, throat sac, vocal sac or gular fold. Gular skin can be very prominent, for example in...

pleural sac Synovial sac, joint component Venom sac, in venom-secreting animals Vestibular sacs (disambiguation) Viscid sac Vocal sac Yolk sac Sacramento...

vocal sac pigmentation is dictated by carotenoid levels, which must be ingested through food intake. Thus, the presence of conspicuous vocal sac coloration...

brooding. The male will facilitate development of its tadpoles inside its vocal sac. This male brooding makes Darwin’s frog distinct from other frog species...

female. Males have vocal cords and make a range of croaks, particularly in the breeding season, and in some species they also have vocal sacs to amplify the...

neck area, such as those caused by a double chin or the submandibular vocal sac of a frog. More generally, it can be any hanging mass of skin, such as...

beneath the mouth, which expands into the vocal sac. The female has a dark-spotted belly and lacks a vocal sac.[citation needed] The oak toad is native...

through a system of air sacs and muscular phonic lips, which vibrate to produce audible vocalizations, thus serving the function of vocal folds in other mammals...

minutes, in order to better camouflage from predators. This frog has a vocal sac that expands and deflates like a balloon to create a short and distinct...

"marsupium". In the frog Rhinoderma darwinii, the zygotes develop in the vocal sac. In the frog Rheobatrachus, zygotes develop in the stomach. Some insects...

have a very loud and distinctive mating call amplified by the single vocal sac found under the chin of the male. Natterjacks live for up to 15 years...

halfway down the back. The male's single vocal sac is internal. When it calls, the throat swells, but the vocal sac is not visible. The northern green frog...

part of the limbs are yellow/orange. They have acute hearing, but no vocal sac, and also lack nuptial pads. The goliath frog is mainly found near waterfalls...

the vocal cords/folds and the larynx, producing the sound. Air enters the buccal cavity, passes through the vocal slits, and inflates the vocal sac. The...

femoralis and Otophryne pyburni). Moreover, this species lacks an external vocal sac, so can only produce low-intensity calls that propagate short distances...

differentiated from related species by its green bilobate (two lobed) vocal sac and call that consists of one to four monophasic notes at a dominant frequency...

stubby, with a short rounded snout. The males have a paired internal vocal sac and three short ridges of small black spines along the inner surface of...

Jaw not in Aves Gums not in Aves Teeth not in Aves, Tusk Tongue Throat Vocal sac Ranidae Vertebral column (extends dorsally) Thorax Udder, Mammary gland...

Microhylidae. Though its morphology lacks a tympanum (eardrum), the subgular vocal sac is clearly visible. The toes are long and unwebbed. The skin of G. carolinensis...

"marsupium"), and the frogs Rhinoderma darwinii (where the eggs develop in the vocal sac) and Rheobatrachus (where the eggs develop in the stomach). Histotrophic...

on the ground. The male frog transports the tadpoles into his enlarged vocal sac. In the Chile Darwin's frog, the tadpoles are transported to a water source...

sound is produced by expelling air from the lungs over the vocal cords into an air sac or sacs in the throat or at the corner of the mouth. This may distend...

With distended vocal sac...

belly is rather paler and is usually unspotted. The male has a single vocal sac on his throat. His call resembles the bleat of a sheep and lasts from...

during vocalization changes air sac pressure to control vocal intensity. The pressure in the interclavicular air sac is highly correlated with the fundamental...

to move within the eggs, the male picks them up and stores them in his vocal sac, where they are kept until they have developed a functioning gut. The...

females and have a dark patch on their throats. The dark patch is the vocal sac, which stretches out when the male is calling. Pacific tree frogs can...

false vocal folds which have a small sac between them. The vocal folds are sometimes called 'true vocal folds' to distinguish them from the 'false vocal folds'...

urgent priority. Typical Amboli bush frog Amboli bush frog with enlarged vocal sac for mating calls Amplexus Wikimedia Commons has media related to Pseudophilautus...