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 ...

Scientists say this animal was likely one of the smartest dinosaurs to ever walk the Earth—and it may be a critical link in prehistoric evolution.

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.

"They're dinosaurs — it's wow enough." By Graeme McMillan John Romita Sr., Legendary Marvel Artist, Dies at 93 Fantastic Four: A Complicated Cinematic Flashback — And Why Fans Are Elated for ...

The result is that some birds, such as parrots and corvids (the bird family that includes ravens and crows), show great cognitive abilities, comparable to the smartest non-human mammals.