A new theory about why the Tyrannosaurus rex had short arms has emerged. Read about why the dominant Tyrannosaurus rex had short arms and why T. rex dinosaurs had short arms.
Many, many children and adults have wondered aloud, upon first learning about the king of dinosaurs Tyrannosaurus Rex, why these powerful, extinct beasts had such short, stubby little arms. Well, a longtime UC Berkeley professor has a new answer.