These are sound effects not found on the Hanna-Barbera , Lost Treasures , or Sony Pictures libraries. They are most likely recordings of a mule or hinny braying, judging by the donkey-like snorts at the end of some of the recordings.
Used In
Shorts
MGM Cartoons (Heard in "Little Gravel Voice", "Northwest Hounded Police", and "The Tree Surgeon")
Image Gallery
MGM Cartoons MGM SCREAM, CARTOON - FUNNY ANIMAL SCREECH in "Northwest Hounded Police"
MGM Cartoons MGM SCREAM, CARTOON - FUNNY ANIMAL SCREECH in "The Tree Surgeon"
Audio Samples
https://soundeffects.fandom.com/wiki/File:Horrified_horse_scream_MGM_1st_variation.wav https://soundeffects.fandom.com/wiki/File:Horrified_horse_scream_2_(isolated).wav https://soundeffects.fandom.com/wiki/File:MGM_SCREAM,_CARTOON_-_FUNNY_ANIMAL_SCREECH_(3rd_variant).wav https://soundeffects.fandom.com/wiki/File:MGM_SCREAM,_CARTOON_-_FUNNY_ANIMAL_SCREECH_(4th_variant).wav https://soundeffects.fandom.com/wiki/File:MGM_SCREAM,_CARTOON_-_FUNNY_ANIMAL_SCREECH_(5th_variant).wav https://soundeffects.fandom.com/wiki/File:MGM_SCREAM,_CARTOON_-_FUNNY_ANIMAL_SCREECH_(6th_variant).wav https://soundeffects.fandom.com/wiki/File:MGM_SCREAM,_CARTOON_-_FUNNY_ANIMAL_SCREECH_(7th_variant).wav https://soundeffects.fandom.com/wiki/File:MGM_SCREAM,_CARTOON_-_FUNNY_ANIMAL_SCREECH_(8th_variant).wav