Slide Show: 5 Hollywood Horses Plot Revenge After Third Fatality Cancels HBO's Luck

HBO’s new series “Luck,” has been cancelled unexpectedly after growing safety concerns for its equine cast members boiled. The show, which starred Dustin Hoffman and Nick Nolte, was responsible for the death of three horses in its short production span.

On Tuesday, a horse was injured and euthanized at Santa Anita Park racetrack, according to USA Today, and HBO agreed to suspend filming at the request of the American Humane Association, a group that oversees Hollywood productions.

HBO’s “Luck” had seen the death of two horses during shooting prior to Tuesday’s incident, both of which generated outrage from the People for the Ethical Treatment of Animals (PETA).  PETA sent a letter to L.A. District Attorney Cooley one day prior to the death of the third horse.