The ending to the Alternate Theatrical Version varies from the original ending. Instead of blowing himself and the hemocytes up with a grenade, Neville discovers that the hemocytes actually came for the female he captured earlier in the movie. He relieves her of the cure and returns her to the hemocytes.

One may also ask, does the dog die in I Am Legend book? A terribly sad dog death occurs in I Am Legend. Will Smiths dog saves him from the zombie hounds, but is bitten, and Smith has to kill his best and only friend.

Similarly, it is asked, why did I Am Legend change the ending?

Unfortunately, as revealed by I Am Legend director Francis Lawrence, the reason the ending was changed to the happier one seen in theaters is due to intensely negative reactions to the ending where Neville has his villainous realization from test audiences.

How long is I Am Legend book?

The average reader will spend 3 hours and 6 minutes reading I Am Legend at 250 WPM (words per minute). Robert Neville may well be the last living man on Earth . . . but he is not alone.