This two headed albino milk snake was born last year in Florida. The condition, called Polycephaly, occurs when monozygotic twins fail to separate completely. Most organisms with this condition will not live for long, but occasionally you will get cases like this one, where the snake(s?) seem healthy enough and can live for years. The heads act independently of one another, and will fight over food given the opportunity.
PP: "GOD SAVE US. THIS SNAKE WAS FOUND IN THE MOUNTAINS OF HONDURAS . AND THE BIBLE SPEAKS OF A SNAKE WITH 7 HEADS AND WITH THIS WE SEE THAT IT IS FULFILLING EVERYTHING THAT IS WRITTEN . LORD HAVE MERCY ON OUR SOUL'S." (Found on Facebook) *face palm*