Critics demand improvements at 'zoo of death'

So many animals have perished at Indonesia's biggest zoo that wildlife activists call it the "zoo of death" and are demanding an overhaul of its management.

Activists say many of the more than 2,200 animals at the zoo in the city of Surabaya are crowded into cages and enclosures far too small for them, and they also face a shortage of proper feed.

One of the latest losses was a rare Sumatran tiger that died unexpectedly last month.