Sloths are so named because of its very low metabolism and deliberate
movements, sloth being related to the word slow. This supports their
low-energy diet of leaves and avoids detection by predatory hawks and
cats that hunt by sight. Sloths are almost helpless on the ground but
are able to swim. The shaggy coat has grooved hair that is host to
symbiotic green algae which camouflages the animal in the trees and
provides it nutrients. The algae also nourishes sloth moths, some
species of which exist solely on sloths.
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