"Two Dozen and One Greyhounds" was written by Mike Scully and guest starred Frank Welker as a pet greyhound who was introduced in a special called what?
Santa's Little Helper: Santa's Little Helper is a recurring character in the American animated television series "The Simpsons". Santa's Little Helper:  He is the pet greyhound of the Simpson family. Santa's Little Helper:  The dog was introduced in the first episode of the show, the 1989 Christmas special "Simpsons Roasting on an Open Fire", in which his owner abandons him for finishing last in a greyhound race.
i don't know