LOUISVILLE, Ky. (AP) - The Louisville Zoo says its oldest polar bear has died.
The Zoo says Arki, a female, was 28 years old and died from unknown causes on Wednesday.
Arki came to Louisville in 2011 from the Brookfield Zoo in Illinois.
A news release from the Louisville Zoo says polar bears usually live into their mid-20s.
Arki was considered one of the most prolific polar bears with five successful litters. One of the two remaining polar bears at the Louisville Zoo, 3-year-old Siku, is Arki's grandson.
The other remaining polar bear at the Louisville Zoo is 2-year-old Qannik, a female.
The Zoo says a necropsy will be performed on Arki to determine the cause of death.
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