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Gastrotheca guentheri is the only known frog with true teeth in its lower jaw. [ 2 ] [ 6 ] Its teeth have re-evolved after being absent for over 200 million years, challenging Dollo's law . [ 6 ] Re-evolution of teeth in the lower jaw may have been made easier because the frogs have teeth in their upper jaw so there was already a biochemical ...
The quacking frog (Crinia georgiana), also known as the red-thighed froglet [2] due to its legs tending to be bright red, is a species of frog from the Myobatrachidae family and is in a clad with five other species. The frog is well known for the sound it produces which resembles a quack. It has up to 11 notes and can change the notes in their ...
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.
Rhinodermatidae, also known as Darwin's frogs, mouth-breeding frogs or mouth-brooding frogs, is a small family of frogs found in temperate forests of southern Chile and adjacent Argentina. [ 1 ]
Females reach a size of 100 millimetres (3.9 in) while males sometimes only grow half as large. They have a large head that makes up to 1/3 of the body, with a notably large mouth. Their mouth contains a top row of teeth and two "fangs" on the lower jaw. They have extremely short and stubby limbs and the forelimbs are unwebbed.
Cases have risen dramatically over last decade, according to recent research
Gastrophryne carolinensis, the eastern narrow-mouthed toad, is a species of microhylid frog. [2] It is a relatively small, toad-like amphibian found in damp, shady habitats . The species is highly fossorial , and feeds primarily on ants.
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