Did dinosaurs actually roar?

That fearsome T.rex roar you’ve heard on screen may just be movie magic, as scientists think it might not have roared at all.

Instead, it probably let out a deep, rumbling boom that would still have sent shivers down your spine. T.rex had massive jaws, but it likely didn’t need to open them to make a noise. Just like reptiles and birds, scientists think that T.rex could have made a noise with its mouth shut.
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About the book

Why did the T. rex have such short arms? Could I have a pet dinosaur? What can we learn from dinosaur poo? Covering amazing ancient creatures, fantastic fossils, and the positively perplexing prehistoric world, young dinosaur enthusiast can explore the intriguing answers to more than 200 questions about the nation's favourite curiosity.