This sound effect can be found on Sonothèque, which was made by Auvidis Tempo. It should not be confused with Joel Valentine Roar Sound or Elektra Records, Elephants. Links: https://soundeffects.fandom.com/wiki/Auvidis_Tempo,_Barrissements_D%E2%80%99%C3%89l%C3%A9phants#Audio_Samples