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In the lungless salamanders (family Plethodontidae and the clawed salamanders in the family of Asiatic salamanders), no lungs or gills are present, and gas exchange mostly takes place through the skin, known as cutaneous respiration, supplemented by the tissues lining the mouth. To facilitate this, these salamanders have a dense network of ...
Small-mouth salamanders are nocturnal, often subterranean, preferring moist habitats near permanent bodies of water. Breeding occurs in the spring, with groups of salamanders congregating near the water. Females can lay up to 700 eggs, which they attach in small clumps of up to 30 eggs at a time, to rocks or vegetation under the water.
This is a list of nocturnal animals and groups of animals. There is also a more specific list of nocturnal birds . This is a dynamic list and may never be able to satisfy particular standards for completeness.
[15] [16] The common mudpuppy never leaves its aquatic environment and therefore does not undergo morphogenesis; however, many salamanders do and develop differentiated teeth. [17] Aquatic salamander teeth are used to hinder escape of the prey from the salamander; they do not have a crushing function. [17] This aids the salamander when feeding.
Cryptobranchids are large and predominantly nocturnal salamanders that can reach a length of 1.8 m (5.9 ft), though most are considerably smaller today. [1] Despite being aquatic, they are poor swimmers and mostly just walk on the bottom.
Spotted salamanders are often preyed on by raccoons, skunks, turtles, and snakes. For this reason they perform an important function by connecting the food chain. [8] Moreover, one of their predators is humans since they are popularly [40] sought out through the pet trade.
Greater siren out of water. Greater sirens are carnivorous and prey upon invertebrates (such as insects, crustaceans, gastropods, bivalves, spiders, molluscs, and crayfish) [11] and aquatic vertebrates (such as small fish) [11] with a possible preference for molluscs (such as snails and freshwater clams), [8] [12] although they have been observed to eat vegetation such as algae.
The olm (German: ⓘ) or proteus (Proteus anguinus) is an aquatic salamander which is the only species in the genus Proteus of the family Proteidae [2] and the only exclusively cave-dwelling chordate species found in Europe; the family's other extant genus is Necturus.