"The living sloths belong to one of two families, known as the Megalonychidae ("two-toed" sloths) and the Bradypodidae (three-toed sloths). All living sloths have in fact three toes; the "two-toed" sloths, however, have only two fingers. Two-toed sloths are generally faster moving than three-toed sloths" (Wikipedia, the free encyclopedia) Sloths used to be believed to sleep somewhere between 15 to 18 hours a day. However, recently there has been a study that on the sleeping patterns of the sloth and they now know that sloths sleep just under ten hours a day. Sloths come down from their trees once a week to urinate. Sloths are very interesting creatures.
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