This sound effect can be found on the Monsters and Creatures Sound Effects Library, which was made by Sound Ideas. It includes a shortened edit of Hollywoodedge, Bear Polar Growl Inha AT032201. Links: https://soundideas.sourceaudio.com/track/7552289 https://soundeffects.fandom.com/wiki/Sound_Ideas,_APE,_GIANT_-_LARGE_GROWL_02#Audio_Samples