Elsa (c. January 28, 1956 – January 24, 1961) was a Kenyan Masai lioness raised – along with her sisters "Big One" and "Lustica" – by game warden George Adamson and his wife Joy Adamson after they were orphaned at only a few weeks old. Though her two sisters eventually went to the Netherlands' Rotterdam Zoo, Elsa was trained by the Adamsons to survive on her own, and was eventually released into the wild.
Her story is told in several books by the Adamsons, as well as the 1966 motion picture Born Free.
Elsa and her sisters were orphaned on February 1, 1956 after George Adamson was forced to kill their mother when she charged him, in defense of her three cubs. George only later realised why the lioness had acted so aggressively towards him. George and his wife Joy then adopted the lioness's four-day-old cubs.
While Elsa lived in many ways like a domesticated pet when she was small, Joy Adamson, whom Elsa trusted the most, considered her relationship with Elsa to be that of equals. Indeed, after sending the other two to a zoo, Joy was fiercely determined to give Elsa the education she needed to hunt and live in the wild. Her efforts paid off, earning Elsa worldwide fame at the time, when her early life's story was published in the book Born Free. When Elsa was three years old, she brought three cubs of her own to show to the Adamsons, whom the Adamsons named "Jespah" (male), "Gopa" (male), and "Little Elsa" (female). The life of Elsa and her cubs is covered in the book, Living Free, published not long afterwards.
Elsa's life was cut short when she succumbed to Babesia felis, a form of babesiosis, a tick-borne blood disease similar to malaria, which often infects the cat family. Elsa's grave is located in the Meru National Park. Her death occurred as local sentiment began to turn against Elsa and her cubs, forcing the Adamsons to consider relocation for the cubs. Elsa's death made her cubs much more averse to human contact, even with the Adamsons themselves, complicating what would be their eventual capture and release in the Serengeti. The fate of the cubs upon their release was uncertain, though George Adamson was able to find Little Elsa alive, healthy, and in the company of two other unrelated lions during 19 months of subsequent searching. This was the last time that the Adamsons would ever see one of Elsa's cubs.