 A new study suggests Tyrannosaurus rex had the brains to match its brawn. According to neuroanatomist Suzana Herculano-Houzel, the predatory dinosaurs with tiny arms that are often described as dim-witted dopes might have been as brainy as modern monkeys or at least had a comparable number of brain cells. Not all paleontologists are convinced, ... T. Rex Was a Lot Brainier Than We Thought, Researcher Claims... 