BBC Factual and PBS, the two co-producers of the show, released a first look trailer for Walking with Dinosaurs 2 on Thursday ...

Troodon had a large brain for its relatively small size and was probably among the smartest dinosaurs. Its brain is proportionally larger than those found in living reptiles, so the animal may ...

Palaeontologists agree that Troodon was one of the most intelligent dinosaurs. Canadian Dale Russell developed a thought ...