**Bhubaneswar:** Sushama, the oldest tigress at Nandankanan Zoological Park (NZP) here, died on Sunday morning due to age-related complications.
According to reports, Sushama was 21 years old and had been undergoing treatment for the last three years by NZP doctors.
She breathed her last at 8.20 am today, sources in Nandankanan said.
Sushama, was born of Debashish and Yamuna on December 29, 1995.
Now, there are 21 tigers left in NZP.