A Judas goat is a trained goat used in general animal herding. The Judas goat is trained to associate with sheep or cattle, leading them to a specific destination. In stockyards, a Judas goat will lead sheep to slaughter[1] while its own life is spared. Judas goats are also used to lead other animals to specific pens and onto trucks. They have fallen out of use in recent times,[2] but can still be found in various smaller slaughterhouses in some parts of the world, as well as conservation projects.[3]
Cattle herders may use a Judas steer to serve the same purpose as a Judas goat. The technique, and the term, originated from cattle drives in the United States in the 1800s.[4][5]
The term is a reference to Judas Iscariot, an apostle of Jesus Christ who betrayed Jesus according to the New Testament.