A female Siberian tiger, rests in her enclosure at the Denver Zoo, June 12, 2009. Siberian tigers are classified as critically endangered, with an estimated population of less than 400 individuals remaining in the wild.
A female Siberian tiger, rests in her enclosure at the Denver Zoo, June 12, 2009. Siberian tigers are classified as critically endangered, with an estimated population of less than 400 individuals remaining in the wild.

A group of Siberian tigers in northeast China's Heilongjiang Province played cat and mouse with a drone until they tore it apart, with one literally chewing on the gadget.

Zoo-keepers in northeast China deployed this method to improve the fitness of these overweight tigers.

Source: TRTWorld and agencies