The dinosaur’s teeth were designed for crushing bone, indicating a diet that included large herbivorous dinosaurs. Tyrannosaurus rex lived during the Late Cretaceous period, about 68 to 66 ...

As one of the smartest dinosaurs, it had the largest brain-to-body ratio of any of the other dinosaurs. And we also know that this small theropod could likely run fast, though we don’t know how fast.