This is a Skywalker Sound sound effect. It debuted in Jurassic World Dominion (2022). It was created by using the sounds of mules, stallions and an elderly lioness named Daisy, The sounds of Alligators bellowing were used for the deep growling sounds. Links: https://soundeffects.fandom.com/wiki/SKYWALKER,_ROAR_-_GIGANOTOSAURUS_ROAR#Audio_Samples