How do we know that dinosaurs (like t-rex) roared?

Picture, if you will, the mighty Tyrannosaurus rex. The odds are good what you envision has been brought to you in part by “Jurassic Park,” a plastic toy or some other facet of pop culture. (Perhaps you're a fan of stop-motion master Ray Harryhausen.) But what Hollywood won't teach you is that T. read more

We don’t! Maybe they didn’t! It’s difficult to determine what sounds ancient animals made. When it comes to dinosaurs, we do it in two main ways: 1. Evidence directly from fossils, and 2. Comparison with their living relatives. read more

We don't know for sure, but we can make some pretty well educated guesses by comparing the throat bones of living animals to the dinosaur fossils, and also by extrapolating the behavior of living animals with expected similar lifestyles. read more

Probably not, especially since most "dinosaur" sounds you hear are actually mash-ups of vocalizations made by different modern animals. Since the organs they would have used to vocalize with did not fossilize, however, we may never know what kind of sounds they made (if they were able to make them at all). read more