These are cow sound effects created by Skywalker Sound. Some of the moos are not to be confused with Sound Ideas, COW - SINGLE MOO, ANIMAL 01 and 02 .
According to the THX Ultimate Demo Disc DVD and the THX Calibrator Blu-ray, Marco d'Ambrosio created the sounds (or "cow chord") by using real cows at Skywalker Ranch.
Used In Movies Logos Image Gallery Audio Samples https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_01.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_02.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_03.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_04.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_05.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_06.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_07.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_08.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_09.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_10.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_11.ogg https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_(THX_tune-up).wav https://soundeffects.fandom.com/wiki/File:SKYWALKER,_COW_-_MOOING_(LFE).wav