Entertainment? There are animals who are trained to kill. These are not military or police protection creatures. Bets are placed; both animals become victims of human greed and corruption. They fight until one of the two opponents is maimed or killed and can no longer defend itself. Add to the greed, bullfights, abused circus and rodeo animals, races, dog shows, confined fish tanks, animal enslavement…who in the world gets their thrills from any of these?