Twin polar bears at Oregon Zoo turn 31 - KPTV - FOX 12

Twin polar bears at Oregon Zoo turn 31

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Conrad, above, and his sister, Tasul, will receive enrichment treats to celebrate their 31st birthday at 10 a.m. Tuesday, Dec. 1, at the Oregon Zoo. (Photo: Oregon Zoo) Conrad, above, and his sister, Tasul, will receive enrichment treats to celebrate their 31st birthday at 10 a.m. Tuesday, Dec. 1, at the Oregon Zoo. (Photo: Oregon Zoo)
PORTLAND, OR (KPTV) -

The twin polar bears at the Oregon Zoo that are helping scientists understand climate change celebrated a big milestone Tuesday. Conrad and Tasul celebrated turning 31 years old with a big party, including some icy treats.

The zoo says Conrad is the oldest male polar bear in any North American zoo or aquarium and could be the oldest in the world.

"The median life expectancy for polar bears is 20.7 years for males and 24.2 years for females, so 31 is considered quite elderly both of them," said keeper Nicole Nicassio-Hiskey. "You'd never know it to look at these two though – they're still very playful, especially in cooler weather."

Climate change threatens polar bears, so scientists with the U.S. Geological Survey are studying the twins to find out more about the animals so they can help those in the wild.     

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