for Cass -- she knows she is King of the Dogs
Iggy Pop, reading the novel "Possibility of an Island" felt it was about "death, sex and the end of the human race and some other pretty funny stuff." He was moved. Later he was approached by the author, Michel Houellebecq who was directing the movie -- to do the soundtrack. And this song was born.
Life as a dog is so much better than life as a clone.