Petra the koala is given medication after nasal surgery at Sydney Wildlife World, in Sydney, Australia, Wednesday, March 5, 2008. Petra, after having a CT scan, was diagnosed with a fungal disease called Cryptococcus, which is a common disease found in the nasal cavity of some koalas and is caused by a fungus associated with particular eucalyptus trees.
(Photo: AP Photo/Rob Griffith)
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