 " Two Dozen and One Greyhounds " is the 20th episode of The Simpsons ' sixth season . It originally aired on the Fox network in the United States on April 9 , 1995 . The episode was written by Mike Scully and directed by Bob Anderson . Frank Welker guest stars as Santa 's Little Helper and various other dogs . In the episode , Santa 's Little Helper has puppies with a dog that he met at the greyhound racetrack . When the Simpsons cannot take care of the puppies any longer , they decide to sell them ; however , the puppies do not want to be separated . Montgomery Burns steals the puppies from the Simpsons , and decides to make a tuxedo out of them . Before he can do so , however , Bart and Lisa Simpson save the puppies from Mr. Burns , and ultimately convince him never to wear fur again . 
