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The amount of entrained water the frog can ingest is related to its ability to actively increase its body volume. The frog's buccopharyngeal cavity (the cavity connecting the mouth and the pharynx) is very distensible and can expand substantially. It uses its entire trunk to rapidly enlarge the cavity, which expands into the lower end of the trunk.
Metaphrynella is a small genus of microhylid frogs from the southern Malay Peninsula and Borneo.They are sometimes known as the Borneo treefrogs [1] or tree hole frogs.The common name refers to the microhabitat of these frogs: males call from tree holes and tadpoles develop in the water contained in those holes.
Pseudis paradoxa, known as the paradoxical frog or shrinking frog, is a species of hylid frog from South America. [2] Its name refers to the very large—up to 27 cm (11 in) long— tadpole (the world's longest), which in turn "shrinks" during metamorphosis into an ordinary-sized frog, only about a quarter or third of its former length.
Kaloula baleata, the flower pot toad or sometimes the smooth-fingered narrow-mouthed frog, is a species of narrow-mouthed toad. It is native to India, Borneo, Indochinese Peninsula, Java, Malay Peninsula and Philippines where it lives in lowland rainforests and is tolerant of disturbed sites. The IUCN lists it as being of "Least Concern".
The Cascades frog has a green to brown color on its back and a light yellow on its throat and belly. A range from a few to about 50 gray spots are located on its back. Depending on the situation, the spots may change color from the lighter gray/brown to a darker black spot. The colors on the frog's back are also used to attract mates.
Brevicipitidae or rain frogs is a small family of frogs found in eastern and southern Africa.As of 2020 contains 37 species in 5 genera. [1] [2] Formerly included as subfamily in Microhylidae (narrow-mouth frogs), phylogenetic research has indicated the brevicipitine frogs should be considered as a family with Hemisotidae (shovelnose frogs) as the most closely related sister taxon.
[3] [4] It is also known as the vampire tree frog [3] or the vampire flying frog [5] [6] [7] because of the presence of a pair of fang-like hooks in the mouth of the tadpoles. [7] It is found in montane evergreen forests at 1470–2004 m. [3] The frog is adapted to arboreal living with webbings of feet that allow it to glide between trees.
The presence or development of the vocal sac is one way of externally determining the sex of a frog or toad in many species; taking frogs as an example; The vocal sac is open to the mouth cavity of the frog, with two slits on either side of the tongue. To call, the frog inflates its lungs and shuts its nose and mouth.