The Simpsons Episode 6.20 Two Dozen and One Greyhounds

Santa's Little Helper finds a greyhound girlfriend and becomes the father of a huge litter of yelping puppies. Even though the puppies are cute and lovable, the Simpsons are forced to give them away. Enter Mr. Burns, who agrees to take the litter, secretly scheming to use their pelts to make a fur tuxedo. When Bart and Lisa discover Burns' true intentions, they break into the old man's mansion and try to rescue the puppies. After a confrontation with Burns and Smithers, Bart and Lisa convince them that the puppies should be spared and Mr. Burns agrees. Instead of using their fur for clothing, the old man turns them into racing dogs and makes millions of dollars.