Other Bugs: World's Weirdest: Flies and Maggots
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© National Geographic
World's Weirdest: Freaks of the Sky
World's Weirdest: Flies and Maggots
Houseflies regurgitate on food to tenderize it, spreading harmful bacteria from their previous meals. And their squirming offspring aren't much better company ... although they do play a vital role as nature's recyclers.