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Is that a yawn or a roar?

Marko Djurica / Reuters

A lion cub, right, is pictured next to a seven-day-old rare white lion cub in their enclosure at the Belgrade Zoo in Serbia on April 26.

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Four newborn white lion cubs make their debut at the Belgrade Zoo where the addition of the quadruplets now make 10 rare white lions in the zoo's breeding program. TODAY.com's Dara Brown reports.