FILE - In this Dec. 21, 2012, file photo, Big John the Tasmanian devil growls from the confines of his tree house as he makes his first appearance at the Wild Life Sydney Zoo in Sydney. Tasmanian devils, the carnivorous marsupials whose feisty, frenzied eating habits won the animals cartoon fame, have returned to mainland Australia for the first time in some 3,000 years. Conservation groups have recently released some cancer-free devils in a wildlife refuge on the mainland, and they plan to release more in the coming years. Their hope is that the species will thrive and improve the biodiversity. (AP Photo/Rob Griffith, File)
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