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 by director Mark Kirkland and was the first episode staff writer George Meyer received a sole writing credit for since the season 5 episode "Bart's Inner Child". Meyer, who was facing some psychological difficulties while writing the episode, felt so dissatisfied with the episode's first draft that he turned it in with a pseudonym. The episode satirizes the perceived misdiagnosis of behavioral disorders in children, which was a controversial topic at the time the episode was written. The episode's title is a parody of The Rolling Stones song "Mother's Little Helper", which was also written on the topic of psychological