The Brown Sharptooth (also known as the Allosaurus and the Browridge Sharptooth) is the main antagonist in The Land Before Time VI: The Secret of Saurus Rock. He is an Allosaurus, as revealed by the end credits of the movie, and is voiced by Danny Mann, but also uses some stock vocals effects preformed by Frank Welker. Although he only physically appears in The Secret of Saurus Rock, he is shown in a flashback in the Land Before Time TV series.