Russia's Prime Minister Vladimir Putin (C) holds a five-year-old tiger's head as scientists put on a collar with a satellite tracker on the animal in the academy of sciences Ussuri reserve in Russia's Far East in this August 31, 2008 file picture. Putin, China's premier Wen Jiabao and other world leaders will hold an unprecedented summit this week in a last ditch effort to save the tiger from extinction. [Photo/Agencies]

Russia's Prime Minister Vladimir Putin shows a tiger cub to journalists at his Novo Ogaryovo residence outside Moscow on this October 9, 2008 file picture. Wild tigers could become extinct in 12 years if countries where they still roam fail to take quick action to protect their habitats and step up the fight against poaching, global wildlife experts told a "tiger summit" Sunday. The World Wildlife Fund and other experts say only about 3,200 tigers remain in the wild, a dramatic plunge from an estimated 100,000 a century ago. [Photo/Agencies]