Daspletosaurus 3
Daspletosaurus is a Tyranosaurus type dinosaur.  It looks like a small T-Rex. But unlike Tyrannosaurus rex they lived a million years before Tyrannosaurus.  They hunted in gangs, to take down large heards of Ceratopceans.  At the time there where many different species of Ceratopceans, the species called Chasmosaurus, Styracosaurus and other dinosaurs.  Daspletosaurus lived from Western United States to Western Canada, but not found in the Arctic.