The raptors are dangerous predators from The Lost World. They appear in many episodes, constantly attacking the main characters and the other people on the plateau, both the visitors and the natives, including the Amazons. They also hunt the other dinosaurs, even the Tyrannosaurus. Most of the time, they attack in packs or in pairs, although in some occasions they hunt alone.
- They apparently are Deinonychus in the first season and Velociraptors in the subsequent twos, explaining their differences in appearance.
- They didn't appear in Arthur Conan Doyle's original novel.