Santa's Little Helper the dog was a "sympathetic" character. Welker has been praised by staff members for his performances on the show. David Mirkin has noted that "he can do anything, and it fits perfectly. You forget you're listening to a guy, and he's a pleasure to work with." Groening has commented that he was "unbelievably good" at doing animal noises. After 1995, Castellaneta voiced Santa's Little Helper on his own while Welker performed other animal noises until his full departure in 2002, when he was denied a pay raise. In the "questions and answers" section on his website, Welker revealed that the
Brother's Little Helper which Homer and Marge go to see. Homer says that, since taking Focusyn, Bart has gone "from Goofus to Gallant", a reference to the characters Goofus and Gallant from the children's magazine "Highlights". When Lou sketches Bart based on Homer and Marge's description he ends up drawing Dennis from the comic strip "Dennis the Menace". A shirt at the military base Fort Fragg reads "I Went to the Persian Gulf and All I Got Was This Lousy Syndrome", a reference to Gulf War syndrome. In its original American broadcast on October 3, 1999, "Brother's Little Helper" finished at no. 51