Have you seen this amazing true story?
Back in the '69, two Australian guys buy a lion cub and raise it in their London apartment. As the lion grows, they decide to take him back to Africa where he is reintroduced to the wild. Years later they decide return and try to find the lion... you gotta see this video of their reunion, and then read an excerpt from their story.
WARNING: Expect to bawl like motherless child when you watch the video!
YouTube also has the 10-part video documentary, "Christian, The Lion Who Thought He Was People" - 1969, starring the couple who were in George Adamson's "Born Free".