Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Extreme Dinosaurs is an American animated series from 1997 based on a toy line from Mattel starring a foursome of heroic anthropomorphic dinosaurs and their nemeses: a trio of malevolent velociraptors with plans for world domination. Eventually, the evil dinosaurs' objective is to cause global warming by increasing the Earth's temperature, which will make life on earth more comfortable for reptiles. In Extreme Dinosaurs, the prehistoric reptiles were transformed by an alien criminal, and were given increased intelligence and an anthropomorphic form. A new female, alien police officer character who became involved in the struggle by accident was also added. The key hero and villain characters first appeared in the cartoon series Street Sharks in the last few episodes of that series, the heroes were dubbed the Dino Vengers and were slightly different than the Extreme Dinosaurs. They, except possibly Stegz, also seemed to show some prejudice towards raptors.