This is a rare sound effect that isn’t found on the SFX Kit. It includes Sound Ideas, BEAR - LARGE BLACK BEAR: SINGLE ROAR, ANIMAL 01 in a low pitch. Links: https://soundeffects.fandom.com/wiki/MONSTERS_%26_CREATURES_%5C_BEASTS_-_EXTRA_LARGE_MONSTER:_GIANT_APE:_ANGRY_ROAR#Audio_Samples