This is pretty interesting. Two men, Anthony Bourke and John Rendall, raised this lion cub they bought from a London department store (that had acquired the orphan cub from a zoo). They named him Christian. When he got too big for them to take care of they released him into the wilds of Africa.
In this video clip, a year has passed and Christian has adapted to living with a pride of lions when his old friends come back to visit him. At first the lions approach seems to be, "mmmm...dinner" but you can see his attitude change as he realizes they're his friends. Shortly after the reunion, members of Christian's pride approach and seem to accept the humans. The random older guy without a shirt is George Adamson of Born Free fame.