World's oldest koala in captivity dies in Japan

The world's oldest koala in captivity died at a zoo in western Japan on Wednesday at the age of 25 -- the human equivalent of more than 120 years old.

The female koala, Midori, was kept at Awaji Farm Park England Hill in Minami Awaji City, Hyogo Prefecture. She came to the zoo from Australia in 2003.

Last year, Midori was recognized by the Guinness World Records as "the oldest living koala in captivity and the oldest koala in captivity ever."

The Hyogo Prefectural Government entrusted Midori's breeding to the zoo. Prefecture officials said Midori's appetite for eucalyptus had declined since mid-November and she was losing energy.

They said she fell from a tree on Tuesday and was under medical treatment.

They said Midori's keeper found her dead on Wednesday morning. She is believed to have died from old age.