Santa's Little Helper and is the center of the plots of several episodes. During the course of the show, he has fathered litters of puppies, passed obedience school, had surgery for bloat, replaced Duffman as the mascot for Duff Beer, and been trained as a police dog at Springfield's Animal Police Academy. Some of the episodes that focus on Santa's Little Helper have been inspired by popular culture or real experiences that staff members of the show have gone through. Although cartoon animals are often anthropomorphized, Santa's Little Helper generally exhibits canine behavior. Cast member Dan Castellaneta currently provides the dog's sounds on
Media in The Simpsons Homer's success and comfort in spite of his inherent laziness and ignorance. "Homer's Enemy" explores the comic possibilities of a realistic character with a strong work ethic placed alongside Homer in a work environment. In an essay for the book "Leaving Springfield", Robert Sloane describes the episode as "an incisive consideration of "The Simpsons"'s world. Although "The Simpsons" is known for its self-reflectivity, the show had never looked at (or critiqued) itself as directly as it does in ["Homer's Enemy"]." In the episode, Homer is portrayed as an everyman and the embodiment of the American spirit; however, in some scenes