BALTIMORE (AP) — The Maryland Zoo says a female polar bear that arrived at the facility after being abandoned by a circus in Puerto Rico and became a visitor favorite despite being deaf has died.

Officials say Alaska was euthanized Tuesday morning after her quality of life declined for weeks. She had been suffering from kidney failure. A necropsy will be performed.

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Alaska arrived at the Maryland Zoo in 2002 after being confiscated by the U.S. Fish and Wildlife Service in Puerto Rico.

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Zookeepers say they noticed Alaska didn’t react to their voices or other noises. Veterinarians determined that she was deaf, and a training program was developed using hand signals and other visual cues to work with her.

The Maryland Zoo has two polar bears on exhibit, male Magnet and female Anoki.

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