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In page Joy Adamson:

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Joy Adamson is best known for her conservation efforts associated with Elsa the Lioness. In 1956, George Adamson, in the course of his job as game warden of the Northern Frontier District in Kenya, shot and killed a lioness as she charged him and another warden. George later realized the lioness was just protecting her cubs, which were found nearby in a rocky crevice. Taking them home, Joy and George found it difficult to care for all the cubs' needs. The two largest cubs, named "Big One" and "Lustica", were passed on to be cared for by a zoo in Rotterdam, and the smallest, "Elsa", was raised by the couple.[citation needed]