A depressed 43-year-old elephant has been pictured staring at the wall of her concrete enclosure.
Mali was born in the wild in Sri Lanka, but was flown thousands of miles to Manila Zoo in the Philippines when she was a baby.
At first she lived with two other elephants, but they died not long after she arrived in 1977.
Since then she has lived alone for 35 years.
Thousands of people have signed a petition for the government of the Philippines to transfer Mali to a sanctuary, where she can live out the rest of her days in more comfortable surroundings.
Animal rights group PETA described her as ‘one of the world’s saddest elephants’.
‘Wild elephants engage in activities for up to 20 hours every day, moving about and socialising with other elephants,’ a spokesman said.
‘The entire Manila Zoo measures only 0.055 square kilometers, and Mali’s enclosure is one small piece of that.’
They said she suffers problems with her joints and feet from standing on concrete all the time when in the wild she would walk on grass.