Pink Floyd’s Animals celebrates its 50th anniversary with a 2CD set featuring the original 1977 album alongside a collection of rarities. The second disc includes previously unreleased early versions of “Dogs” and “Sheep,” “Sheep (Original Radio Edit), a promo-only edit made for radio in 1977 which has never been commercially available until now, a “Studio Jam,” plus the unheard Roger Waters track “Young Nicholas Jon.”