For the Smithsonian National Zoo and Conservation Biology Institute (NZCBI), Christmas came early in 2025. Zookeepers were delighted to welcome two new arrivals—sloth bear cubs, born in an off-exhibit ...

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Watch habitat camera of adorable newborn sloth bears Two baby sloth bear cubs were born at Smithsonian’s National Zoo, making it the first birth of the species at the zoo since 2013.