This sound effect can be found on Freesound.org. It was originally a Warner Bros. sound effect, and is the original, high quality, full recording of CARTOON, ELEPHANT - ELEPHANT TRUMPETING from the Warner Bros. Sound Effects Library. One of the trumpets is similar to Hollywoodedge, Elephant Single Clas AT043701, Hollywoodedge, Elephant Single Trum AT043404, Hollywoodedge, Elephant Trumpeting PE024801 (9th trumpet) and Hollywoodedge, Elephant Single Shor AT043402. It was most likely recorded from Asian elephants. Links: https://freesound.org/people/craigsmith/sounds/437977/ https://soundeffects.fandom.com/wiki/Freesound,_G12-44-Elephants_and_Tigers.wav#Audio_Samples