'''''Lifesblood''''' is an EP by American [[progressive metal]] band [[Mastodon]]. The sample at the beginning of "Shadows That Move" is from the film ''One Flew Over the Cuckoo's Nest''. The sample at the beginning of "Hail to Fire" is from the autobiographical film ''The Dancin' Outlaw'' by Jesco "Jesse" White. The samples at the beginning of "We Built This Come Death" and "Battle at Sea" are believed to be taken from recordings of the Nuremberg Trials.<ref>http://avalon.law.yale.edu/imt/08-09-46.asp</ref> Since this album was only printed for a limited time, it has become quite rare and sought after by Mastodon fans. The limited prints come in a variety of colors, each with a certain amount produced; 100 clear, 500 red, 500 black and a second press of 500 blue and black. The EP was also re-released in August 2004 by [[Relapse Records]]. All tracks also appears on their compilation album, ''[[Call of the Mastodon]]'', but without samples at the beginning. The album title is derived from a lyric in the song, "Trampled Under Hoof", which appears on their debut album, ''[[Remission]]''.