WASHINGTON (Reuters) - Surmising even the physical appearance of a dinosaur - or any extinct animal - based on its fossils is a tricky proposition, with so many uncertainties involved. Assessing a ...

For decades, scientists thought they had dinosaurs figured out, then someone would discover something new and everything would change. The theories about dinosaur brains and intelligence have been all ...

How intelligent was Tyrannosaurus rex? Paleontologists and other researchers have long been intrigued by this question—and it’s a difficult one to answer. While scientists have plenty of fossilized ...