Tyrannosaurus rex
A rumble so low you would feel it in your chest.
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Hear me roar
Six dinosaurs, face to face. Tap one and it will open its mouth and let you know how it feels. Turn your sound up.
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Triceratops
A deep bellow, something like a bull.
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Spinosaurus
A long, wet hiss, like a very big crocodile.
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Velociraptor
A harsh screech and a hiss, more like a goose than a lion.
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Parasaurolophus
A long, low hoot through its hollow crest, like a trombone.
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Stegosaurus
A low grunt. Its head was small, and so, probably, was its voice.
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Did they really roar?
Nobody knows. Sound does not fossilise, so every dinosaur noise you have ever heard is a guess, including these, which are made by your own device and are not recordings of anything. Their closest living relatives are birds and crocodiles, and the largest of those make deep booms and rumbles with their mouths shut. Many scientists think big dinosaurs did the same. One sound we can be surer of is the Parasaurolophus: its hollow crest has been scanned and rebuilt, and blowing through it gives a low, mournful hoot.
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