Footage of overweight Siberian tigers chasing a drone around their enclosure in north-east China to lose weight.

The footage, captured in Harbin, Heilongjiang Province, shows the chubby big cats chasing the drone, with one of them eventually leaping up to knock it out of the sky.

SInce the video came to light, disturbing reports have emerged claiming that the tigers in the clip were being bred for their fur and bones at the Harbin Siberian Tiger Park.