Animals is a concept album by Pink Floyd, released on 23 January 1977 in the UK and on 2 February 1977 in the U.S. Animals is a concept album, based on the flaws of capitalism. Various castes in society are represented as different types of animals (Dogs as the businessmen, sheep as the powerless pawns, and pigs as the ruthless leaders). Although this album mainly attacks capitalism, several components are similar to George Orwell's novel "Animal Farm": In the book various animals (mainly pigs, sheep, dogs, etc.) represent different roles assumed by individuals in a communist society.