Stenonychosaurus

Stenonychosaurus was a small dinosaur, up to 2.5 metres long and 35 kilograms in body mass. The largest specimens were about the size of Deinonychus and Unenlagia.12

Scientists think it was probably an omnivore, eating both meat and plants. Its teeth had large serrations and its jaws met in a broad U-shape, similar to an iguana, which suggests it could bite through tough plant material.12

Yes, it had one of the largest brains of any dinosaur relative to its body size, comparable to modern birds. It was probably cleverer than most dinosaurs, but not as smart as a human or a crow.12

Yes, it had very long, slender hind limbs, which suggests it could run quickly. It also held its sickle-shaped claws off the ground when running.12

It lived during the Late Cretaceous period, about 77 to 74 million years ago, in what is now Canada.2

Yes, it is a small theropod dinosaur, specifically a troodontid. Troodontids are a group of bird-like dinosaurs, not birds themselves.12

The sources do not mention feathers on Stenonychosaurus. However, it is closely related to birds and other feathered dinosaurs, but we don't have direct evidence from the fossils described.1

Its eyes were very large and slightly forward facing, giving it good depth perception. This might have helped it hunt, and some scientists think it may have been partially nocturnal.1