"Dogs" is a song by English progressive rock band Pink Floyd, released on the album Animals in 1977. This song was one of several to be considered for the band's "best of" album Echoes: The Best of Pink Floyd. The song was written in 1974 by Roger Waters with music co-written by David Gilmour with the title "You've Got to Be Crazy". From the start, the song featured both Gilmour and Waters taking turns as lead vocalist. Waters modified the lyrics in some parts, transposed the key, and retitled it "Dogs". The version on Animals is 17 minutes long.