Siberian tigers fight for a chicken at the Siberian Tiger Forest Park in Harbin, Heilongjiang province Dec 27, 2011. More than 800 Siberian tigers are currently living in the park, which is also a breeding centre for this endangered species, local media reported. [Photo/Agencies]

Visitors watch from a bus as Siberian tigers try to catch a chicken at the Siberian Tiger Forest Park in Harbin, Heilongjiang province Dec 27, 2011. [Photo/Agencies]