Dinosaur roars became a staple of soundboards after Jurassic Park in 1993 made the Tyrannosaurus rex the definitive movie monster, with a layered roar built from animal recordings. Shorter clips like this one spread through meme pages, gaming videos and dinosaur toys, where the roar works without any footage at all. Creators reuse it for fake trailers, park scenes and creature reveals because audiences instantly link the sound to a T. rex, even decades later, and the association needs no explanation or setup for younger viewers online today.