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Polar bear dies at South African zoo

One of South Africa's two polar bears has died at the Johannesburg Zoo, leaving its mate now believed to be the only polar bear in Africa, a veterinarian said Wednesday.

Geebee, the 29-year-old polar bear, came from Canada and had long survived the warm climate in Johannesburg, where temperatures can rise above 30 degrees Celsius (86 degrees Fahrenheit) in the summer.

She died of natural causes and had lived in the zoo with her male partner, Wang, who is from Japan, for nearly three decades.

Veterinarian Katja Koeppel said the zoo had no plans of replacing the dead polar bear, saying the climate was not suited to a species native to some of the coldest parts of the world.

"They adapt very well but they can't breed, it's the wrong climate," she said.

She added that the two animals "preferred staying outside and swimming... then lying in the aircon room."

Since Geebee's death, Wang had displayed unusual behaviour and been destructive and restless, she said.