Why Giant Tortoise Sex Became the Basis of a Key 'Game of Thrones' Sound Effect

dragon tortoise
If you're watching "Game of Thrones" this weekend, be sure to listen for the giant tortoise mating calls.
(Image credit: Mindy Weisberger/Live Science)

When you hear the signature roars of Drogon, Rhaegal and Viserion — the three key dragon cast members in "Game of Thrones" — tortoise sex is probably the furthest thing from your mind. And yet, according to series sound designer Paula Fairfield, the mating cries of giant tortoises are among the many sound samples she used to give the show's great winged beasts a voice.

In a 2017 interview with RadioLab, Fairfield explained how she crafted the sounds of the dragons moving, roaring and communicating with other characters by mashing up various animal noises, including screeching birds and reptiles, fluttering dragonfly wings and even her own dog's nasal whistles. Listen closely to the way Drogon purrs in the company of his friends, and you may even hear a sound you'll wish you hadn't — the mating moan of a giant male tortoise. [Photos: 33 Stunning Locations Where 'Game of Thrones' Was Filmed]

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Brandon Specktor
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Brandon is the space / physics editor at Live Science. With more than 20 years of editorial experience, his writing has appeared in The Washington Post, Reader's Digest, CBS.com, the Richard Dawkins Foundation website and other outlets. He holds a bachelor's degree in creative writing from the University of Arizona, with minors in journalism and media arts. His interests include black holes, asteroids and comets, and the search for extraterrestrial life.