On July 10, 1981, Disney's animated film "The Fox and the Hound" made its debut in theaters. This film marked a significant milestone in animation history as it was the first time Disney used computer-generated imagery (CGI). During the intense scene where Amos Slade traps Tod and Vixey in a burrow, Disney utilized CGI to enhance the animation, showcasing the beginning of a new era in animated filmmaking.