The story of Christian the lion and his two human companions truly shows how deep and powerful the relationship between an animal and their humans can be.

In 1969, John Rendall and Ace Berg raised Christian from a cub as a pet in their apartment. While some might think it's cruel to keep a lion in an apartment, the love for Christian was always paramount, shown by their desire to get him back into the wild.

Which they successfully succeeded in doing...
  Two years after being released, the men returned to Africa to reunite with their big cat. The most astonishing thing was that Christian remembered them!

It is a truly touching video and one that all animal lovers can relate to.