Although several scenes of the story depict violence and cruelty toward and involving animals, a film spokesperson explained that no animal was harmed, and special effects were used. For example, Quigley and Cora are reduced to consuming "grub worms" (actually blobs of dough) for survival. A pack of dingoes attacks Cora, and she finally saves herself by shooting the animals. Those animals were specially trained, and were actually "playing" for that scene, which was later enhanced by visual and sound effects. Several scenes involve falling horses; they were performed by specially-trained animals and were not hurt. When a horse falls off a cliff, the "horse" was a mechanical creation. The film's producer stated that a veterinarian was on the set whenever animals were being used in filming.