Cast & Crew
Documentary that explains how mammals replaced dinosaurs as the largest, fastest and fiercest creatures in the world. Sixty-five million years ago, a giant meteorite struck Earth, causing the mass extinction of many species. Although this cataclysmic event sounded the death knell for the 160-million-year reign of the dinosaur, a few mammals survived. As the world became an unpredictable place, mammals had only two choices: adapt of die.