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Two-year-old twin polar bears Kallik (pronounced Kah-LEEK), left, and Kallu (Kah-LOO) take a swim during their public debut ...

An energetic pair of polar bear twins will be on view to the public at the Saint Louis Zoo for the first time today ...

Polar bear twins Kallu and Kallik debut at Saint Louis Zoo, attracting visitors to their 40,000-square-foot habitat, with the ...

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ST. LOUIS — You can now say "hello" to polar bears Kallu and Kallik at the Saint Louis Zoo! After a weeks-long quarantine and acclimation period, the twin brothers made their public debut on Tuesday.