Secret of 'Jurassic Park' raptor sounds? Tortoise sex - CNET

Dinosaurs may be visually terrifying but Lucasfilm sound designer Gary Rydstrom confirms that tortoises mating make for great velociraptor vocals.

Secret of 'Jurassic Park' raptor sounds? Tortoise sex - CNET

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Did You Know Some Of The Most Iconic Sounds In Films Have Really Surprising Origins? - ScoopWhoop

The velociraptors in Jurassic Park were 'voiced' by tortoises having SEX: Sound designer reveals secrets of the film's effects

How many species of dinosaur are there in Jurassic Park/World? How were they able to create such a diverse collection of dinosaurs for their theme park/island(s)? - Quora

How can Blue the Raptor have a baby raptor in 'Jurassic World Dominion'? - Quora