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Gongylonema pulchrum was first named and presented with its own species by Molin in 1857. The first reported case was in 1850 by Dr. Joseph Leidy, when he identified a worm "obtained from the mouth of a child" from the Philadelphia Academy (however, an earlier case may have been treated in patient Elizabeth Livingstone in the seventeenth century [2]).
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.
Eastern Narrow-mouth Toad, (Gastrophryne carolinensis) Liberty Co. Texas, USA. Gastrophyryne carolinensis toads are weak jumpers, thus either run or move by short and rapid hops. [16] In general, the males move more than the females. [3] These toads are mainly nocturnal, and generally remain under ground or hidden in debris during the day. [3]
The ground-dwellers are often found under leaf litter within forests, occasionally venturing out at night to hunt. The two main shapes for the microhylids are wide bodies and narrow mouths and normal frog proportions. Those with narrow mouths generally eat termites and ants, and the others have diets typical of most frogs. Egg-laying habits are ...
Nasolacrimal duct apparent. Mouth narrow, superior, lower and upper-lips both visible. Tail long, tapering, with a whip-like flagellum. Tadpoles of Microhyla rubra lack keratinized mouth parts and have a dorsoterminal mouth. They have six papillae (scallops) on the lower lip but number varies with developmental stage.
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The parotoid gland (alternatively, paratoid gland) is an external skin gland on the back, neck, and shoulder of some frogs (especially toads), and salamanders. It can secrete a number of milky alkaloid substances (depending on the species) known collectively as bufotoxins , which act as neurotoxins to deter predation .
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