Dinosaurs began appearing in films soon after the introduction of cinema, the first being the good-natured animated "Gertie the Dinosaur" in 1914. However, lovable dinosaurs were quickly replaced as moviemakers recognized the thrill of huge frightening monsters. D. W. Griffith in 1914's "Brute Force" provided the first example of a threatening cinematic dinosaur, a "Ceratosaurus" who menaced cavemen. This film enshrined the fiction that dinosaurs and early humans lived together, and set up the cliché that dinosaurs were bloodthirsty and attacked anything that moved.