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Round-tailed muskrat : ウィキペディア英語版 | Round-tailed muskrat
The round-tailed muskrat (''Neofiber alleni'') is a species of rodent in the family Cricetidae, sometimes called the Florida water rat.〔("Florida water rat" ), ''Encyclopædia Britannica'' online, retrieved August 14, 2008〕 It is the only species in the genus ''Neofiber''. It is found only in the southeastern United States. Its natural habitat is swamps. ==Description==
The round-tailed muskrat is a semi-aquatic and nocturnal species native to the southeastern United States.〔 There is limited sexual dimorphism among round-tailed muskrats with female adults weighing an average of 262.0 grams and male adults measuring at a slightly heavier average of 279 grams.〔 The round-tailed muskrat feeds on emergent aquatic grasses,〔 including aquatic plant stems, seeds and roots, to sustain its herbivorous lifestyle.〔 The most prominent predators of the round-tailed muskrat are marsh hawks and barn owls, but most predation occurred when the round-tailed muskrats were found outside their normal territory, having been displaced by floods.〔 The pelage of a newly born round-tailed muskrat varies from gray to ash-gray. Adult round-tailed muskrats have a brown pelage with pale fur on the belly. This change in coat color is the result of a juvenile molt (between 7 and 30 days post-partum) and a subadult molt (between 35 to 50 days post-partum). Molting in round-tailed muskrats has been observed throughout the year, but is more prevalent during the autumn months.〔
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