Troodon

Troodon was a small predator from Late Cretaceous North America, about 75 million years ago. Closely related to raptorid dinosaurs, it shares a similar body plan with grasping hands, a feather coating, large eyes, and sickle killing claws on both feet. Possibly the smartest dinosaur, Troodon has the largest brain to body size ratio of any dinosaur. It’s name means “wounding tooth” because of the large and prominent serrations on all of its dozens of teeth.