This sound effect can be found on The General Series 6000 Sound Effects Library, which was made by Sound Ideas. It's similar to ANIMAL, WILDLIFE - WILDLIFE AMBIENCE ON PLAINS, another Series 6000 sound effect. Links: https://soundeffects.fandom.com/wiki/Sound_Ideas,_LION_-_TWO_LIONS_ROARING,_ANIMAL,_CAT#Audio_Samples