Philadelphia Zoo Animals
Zenda Philadelphia Zoo Lion Philadelphia Zoo/for PhillyVoice

The Philadelphia Zoo announced that Zenda, a 25-year-old female African lion, was euthanized on Thursday, Dec. 29, 2016, due to heath reasons.

December 30, 2016

Philadelphia Zoo lion Zenda, the oldest in the U.S., has died

Big cat was euthanized due to a decline in behavior and mobility

The Philadelphia Zoo has euthanized its beloved 25-year-old female African lion, Zenda, it announced in a statement Friday.

Zenda, who died on Thursday, was the oldest African lion in the United States zoo population. The reason for her death was a decline in behavior and mobility, the zoo said, adding that zoo lions typically live an average of 17 years.

Zenda's life at the Philadelphia Zoo started in July 1993 when she was transported there at age 2 from the Johannesburg Zoo in South Africa where she was born.

She was brought to the Philadelphia zoo with two female lions, Jezebel and Vinkel, and male lion, Merlin.

YouTuber ZooVisitorMM posted the video below showing Zenda in the Philadelphia Zoo's Big Cat Falls exhibit last summer.

The pride was relocated temporarily to the Columbus Zoo in 2004, but then returned for the Philadelphia Zoo with the opening of the Big Cat Falls exhibit in 2006.

Six African lions now remain at the zoo: Makini, a 7-year old male, Tajiri, a 6-year-old femaleĀ and their four female offspring Kataba, Mali, Msinga and Sabi, who were born in June 2014.