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National Zoo and Conservation Biology Institute

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Meet Vostok, the National Zoo's New Amur Tiger

The 2-year-old male tiger is now at home with the other residents of the Great Cats exhibit. Get the facts on how animal care teams helped this endangered animal adjust to his new surroundings.

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How Genomic Science Solved a Cheetah Cub Paternity Mystery

When Echo's five cubs were born last fall, their exact lineage was unclear. A genetic analysis conducted by Smithsonian scientists revealed the truth.

Three female African lions rest in the sun and shade in a grassy area along a wood-panel fence

How Zookeepers Care for Aging Lions

Training allows lions to participate in their own health care

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