Spider Monkey (3 of 3) (IMAGE)
Caption
Social grooming, or helping others to stay clean and free of lice and other ecto-parasites, has long been associated with hygiene and good health in wild primates. In the process of picking out ecto-parasites, however, the groomers may be picking up internal ones, a new study finds.
Credit
Rebecca Rimbach
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None
License
Licensed content