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
Brother's Little Helper of IGN posted a "flashback review" of "Brother's Little Helper". Canning, calling the episode "funny" and "a standout episode in this later season", was particularly fond of the episode's opening. However, he was less impressed with the third act of the episode, calling it "lackluster". He felt that the part involving Mark McGwire was "a silly cop out" and that it wasn't as funny as what was leading up to it. He also stated that he was put off by the writers wanting to come across a message. "It's not that I necessarily disagreed with this sentiment", Canning wrote, "but