This sound effect can be found on Serafine L2 Sound Effects Library, which was made by Sound Ideas. It is actually a low pitched excerpt of ELEPHANT - VARIOUS SNORTS, GROWLS, TRUMPETS, ANIMAL from Lucasfilm Sound Effects Library, despite the sound effect's name. Links: https://soundideas.sourceaudio.com/track/7557771 https://soundeffects.fandom.com/wiki/Sound_Ideas,_ANIMAL,_LION_-_LION:_SINGLE_ROAR,_CAT#Audio_Samples