Santa's Little Helper realistic dilemma faced by many families who own dogs. Other episode ideas come from popular culture. For example, Santa's Little Helper fathering 25 puppies in "Two Dozen and One Greyhounds" is a parody of the Disney film "One Hundred and One Dalmatians", and Mr. Burns' technique of brainwashing him into an attack dog in "Dog of Death" parodies "A Clockwork Orange". Susan McHugh, who teaches theories of animals, literature, and culture at the University of New England, wrote in her 2004 book "Dog" that, "remaining loyal to his unlikely saviours, the boy Bart and his father Homer, this greyhound has
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