Santa's Little Helper greyhound's lack of intelligence. In an article that compared "The Simpsons" to the animated series "Family Guy", Todd Camp of the "Fort Worth Star-Telegram" noted that "though Santa's Little Helper may be the only Simpson who's dumber than Homer, the Griffins' pooch <nowiki>[</nowiki>Brian Griffin<nowiki>]</nowiki> is the brainiest member of the household". In 1991, Copley News Service's Alison Ashton described Santa's Little Helper as a "sweet and stupid dog". Tom Coombe of "The Morning Call" wrote in 2002 that "fans of "The Simpsons" will tell you that the cartoon family's dog [...] is often dumb, disobedient and skittish. Fans of the
The Simpsons their original format. In July 2017, all episodes were made available for purchase on the iTunes Store, in the United States. The popularity of "The Simpsons" has made it a billion-dollar merchandising industry. The title family and supporting characters appear on everything from T-shirts to posters. "The Simpsons" has been used as a theme for special editions of well-known board games, including Clue, Scrabble, Monopoly, Operation, and The Game of Life, as well as the trivia games What Would Homer Do? and Simpsons "Jeopardy!". Several card games such as trump cards and The Simpsons Trading Card Game have also been