The T-Rex was not the loudest, but one of the most dangerous dinosaurs of its time! Its large head was lined with many pointed teeth. One tooth could be up to 18 cm long. Grab a ruler and measure!
Incidentally, researchers assume that lava-spewing volcanoes were instrumental in the disappearance of the dinos 65 million years ago. More than 1500 volcanoes are still active today. Do you know any?