This sound effect can be found on the Wild World of Animals Sound Effects Library, which was made by Sound Ideas. It is a slightly low pitched and slowed down edit of Leopard Roars Growls PE025801 from The Premiere Edition Volume 1. Links: https://soundideas.sourceaudio.com/track/7536226 https://soundeffects.fandom.com/wiki/Sound_Ideas,_ANIMAL,_PANTHER_-_VARIOUS_GROWLINGS,_PURR-LIKE_GROWLS,_SNARLS,_BREATHS,_CAT#Audio_Samples