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sloth
Sloths ( , )〔The pronunciation is commonest in British English. The pronunciation is used in most Englishes.〕 are medium-sized mammals belonging to the families Megalonychidae (two-toed sloth) and Bradypodidae (three-toed sloth), classified into six species.
They are part of the order Pilosa and are therefore related to anteaters, which sport a similar set of specialized claws. Extant sloths are arboreal (tree-dwelling) residents of the jungles of Central and South America, and are known for being slow-moving, and hence named "sloths". Extinct sloth species include a few species of aquatic sloths and many ground sloths, some of which attained the size of elephants.
Sloths make a good habitat for other organisms, and a single sloth may be home to moths, beetles, cockroaches, ciliates, fungi, and algae.
==Taxonomy and names==
The sloth's taxonomic suborder is Folivora, sometimes also called Phyllophaga (Owen, 1842) or Tardigrada (Latham and Davies, 1795). The first two names both mean "leaf-eaters"; derived from Latin and Greek, respectively. Names for the animals used by tribes in Ecuador include ''ritto'', ''rit'', and ''ridette'', mostly forms of the word "sleep", "eat", and "dirty" from Tagaeri tribe of Huaorani.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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