I also used these realistic sounds in a psychological way. With The Good, the Bad and the Ugly, I used animal sounds - as you say, the coyote sound - so the sound of the animal became the main theme of the movie.
-- Ennio Morricone
   
Ennio Morricone   Name:
Ennio Morricone
Type:
Composer
Nationality:
Italian
Birth:
November 10, 1928
https://www.nutquote.com/quote/Ennio_Morricone