Three-toed sloth

Smithsonian Tropical Research Institute
July 31, 2017
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sloth clinging to tree branch
Smithsonian Tropical Research Institute

Animals like this three-toed sloth, Bradypus variegatus, may be extremely difficult to spot in the dense tropical forest canopy. A group of researchers working at the Smithsonian Tropical Research Institute on Barro Colorado Island in Panama could detect this an many other, even more elusive animals using carrion flies. (Photo courtesy Smithsonian Tropical Research Institute)