Do Androids Dream of Electric Sheep? is a science fiction novel written by Philip K. Dick. It is set in a post-apocalyptic future where most animal species have become extinct, and artificial animals are used as substitutes. The story follows Rick Deckard, a bounty hunter tasked with retiring rogue androids. The book raises questions about what it means to be human and explores themes of empathy, identity, and the blurred line between man and machine.