Four Score

Four Score is a dog who accompanies the slaves from the Temple of the Union.

Background
Four Score is Hannibal's faithful dog companion, cared for by Bill Seward.

Appearances
Four Score appears in Fallout 3 and also makes an appearance in Fallout Shelter as a legendary cattle dog.

Behind the scenes
Four Score's name is a reference to Abraham Lincoln's Gettysburg Address, which begins with "Four score and seven years ago..."