This sound effect can be found on the SFX Kit, which was made by Sound Ideas. It includes Sound Ideas, ANIMAL, ROAR - COMPLEX, HEAVY CRY, a reversed version of Sound Ideas, ANIMAL, SCREAM - INTENSE, STRAINED, COMPLEX SCREAM: BATTLING DINOSAUR 03 and a low pitched, bitcrushed version of Hollywoodedge, Elephant Single Clas AT043701.
Links:
https://sounddogs.com/Search?RecordingType=Sound%20Effects%20and%20Music&NavSearch=True&keywords=10242127
https://soundeffects.fandom.com/wiki/Sound_Ideas,_MONSTERS_%26_CREATURES_%5C_BEASTS_-_EXTRA_LARGE_MONSTER:_GIANT_LIZARD:_DEATH_ROAR#Audio_Samples
