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post-gazette.com —
Maddox Derkosh was killed in a mauling at the Pittsburgh Zoo in November 2012. The parents of a 2-year-old boy who was fatally mauled after falling into a wild African dogs exhibit last fall have sued the Pittsburgh Zoo & PPG Aquarium, claiming officials had ample warning that parents routinely lifted children onto a rail overlooking the exhibit so they could see better.
