Destitute polar bear thought to be covered in faeces struggles to stand up
Appalling video was apparently recorded at Belgrade Zoo, Serbia
Huge animal finally gets off his feet and plods forward to eat food
This is the heart-breaking instant a polar bear caked in his own faeces fights to stand up in his zoo enclosure.
The enormous white animal, who allegedly lives at Belgrade Zoo in Serbia, can be seen sitting on its rear legs near a pond of dirty-looking water.