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A newt is a salamander in the subfamily Pleurodelinae. The terrestrial juvenile phase is called an eft. Unlike other members of the family Salamandridae, newts are semiaquatic, alternating between aquatic and terrestrial habitats. Not all aquatic salamanders are considered newts, however.
Rough-skinned newt. The skin of salamanders, in common with other amphibians, is thin, permeable to water, serves as a respiratory membrane, and is well-supplied with glands. It has highly cornified outer layers, renewed periodically through a skin shedding process controlled by hormones from the pituitary and thyroid glands. During moulting ...
Plethodontidae, or lungless salamanders, are a family of salamanders. [ 1 ] [ 2 ] With over 500 species, lungless salamanders are by far the largest family of salamanders in terms of their diversity. Most species are native to the Western Hemisphere , from British Columbia to Brazil.
These salamanders are slender, with a wide nose and distinctive long toes, and range in size from 11 to 18 cm (4.3 to 7.1 in). Like other mole salamanders, the Jefferson salamander burrows; they have well-developed lungs suited for this purpose. Nocturnal by nature, they can be spotted by day during the mating season. Breeding occurs in early ...
Van Dyke's Salamander (Plethodon vandykei) is a salamander in the order Caudata and the family Plethodontidae. Like most terrestrial salamanders Van Dyke's Salamander lives near lakes, rivers, and streams under various objects such as rocks, logs, and bark. Salamanders' habitat range from wide open lowlands up to heavily wooded mountains.
The Zaimeng Lake crocodile newt is a “medium”-sized salamander, reaching about 6.4 inches maximum and weighing about an ounce, the study said. It has “very rough” skin and “knob-like ...
Salamandridae is a family of salamanders consisting of true salamanders and newts. Salamandrids are distinguished from other salamanders by the lack of rib or costal grooves along the sides of their bodies and by their rough skin. Their skin is very granular because of the number of poison glands. They also lack nasolabial grooves.
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