Just catching up with the April 1 story in the English-language Taipei Times, about the shocking revelation that Tuan Tuan and Yuan Yuan, the two pandas mainland China had sent to Taiwan as a good-will gesture, were actually fakes. Clip from story below.
The Onion-worthy part of the story, IMHO, is the setup for discovering the fraud. Unlike real pandas, this pair was extremely randy ("children screamed and parents became irate"). When zookeepers tried to maintain order ("whenever the moaning from the panda enclosure gets too loud we gotta go in there and hose 'em down with cold water") the painted-on panda markings wore off, revealing the truth. Many similar nice touches. See for yourself: online version here, full page PDF here, followup here and here. Thanks to Daniel Lippman.