MIAMI - A 55-year-old Sumatran orangutan, believed to be the world's oldest, choked to death at the Miami Metro Zoo, according to necropsy results.
The orangutan named Nonja suffered a brain haemorrhage that made her pass out and vomit. She choked on her vomit and was found dead Saturday, Miami Metro Zoo spokesman Ron Magill said on Sunday.
Nonja was born on the Indonesian island of Sumatra and has lived in Miami since 1983. Despite her age, Nonja was in good health, Mr Magill said.
A typical life span for Sumatran orangutans is 40 to 50 years.
Further testing will determine what caused the brain haemorrhage.
The results could take two weeks, he said.