This is a Skywalker Sound/Star Wars sound effect, created by Ben Burtt for the Sand People/Tusken Raiders, and debuted in Star Wars: Episode IV - A New Hope (1977). It should not be confused with Sound Ideas, DONKEY - C.U. BRAY, ANIMAL, which were also used for the yells of the Tusken Raiders. Links: https://soundeffects.fandom.com/wiki/SKYWALKER,_ANIMAL,_ALIEN_-_TUSKEN_RAIDER_YELL#Audio_Samples