 Considering the films running time, it could have possibly been  longer. According to the book The Making of King Kong, there was a  scene written and filmed where Denham, Driscoll and the Venture crew  build rafts to cross the swamp, only to be attacked by an aquatic  creature (a "Piranhadon"). There was also mention of a scene where  Lumpy the cook shoots a large flightless bird.