Santa's Little Helper barrier, allowing the dog to understand Bart's commands, and consequently pass the obedience school. Santa's Little Helper has fathered several puppies. In "Two Dozen and One Greyhounds" (season six, 1995), he runs away to the dog racing track where he mates with a female hound named She's the Fastest. She later gives birth to 25 puppies and when the Simpsons cannot take care of them any longer, they decide to sell them; however, Mr. Burns steals the puppies and decides to make a tuxedo out of them. Before he does this, however, he becomes emotionally touched by them. This convinces
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