User blog comment:Tyrannoraptor/why use black arrow to shoot Smaug at the weak spot? why not normal arrows to kill Smaug!/@comment-26082545-20150409155640/@comment-166.137.139.59-20150816043856

By the movies, yes, the black arrow is special. By the book, however, Bard only mentions that the arrow is black and he has always been able to retrieve it.