Therizinosaurus was a large, feathered, plant-eating dinosaur from the Late Cretaceous, famous for claws that could reach around a metre long despite its gentle diet. That contrast between a fearsome appearance and a herbivorous lifestyle is part of why it fascinates dinosaur fans today. Short roar clips like this one circulate online as quick reaction sounds and edit accents, especially in dinosaur, gaming and Jurassic-themed content, where a single prehistoric bellow can instantly signal something huge, old and not to be underestimated.