Santa's Little Helper reason he stopped performing as Santa's Little Helper was because "The producers thought... 'Hmmm, Dan barks pretty good, and we are already paying him and he seems to like doing the dog thing... why do we need to pay Welker who comes in here, spends less than an hour, eats all the doughnuts, refuses to come to rehearsals... let's just give the damn dog to Dan!'" Santa's Little Helper has become a well-known dog because of his appearances in the series. A writer for "The Grand Rapids Press" wrote in 2002 that "we all know who Homer, Marge, Bart, Lisa
Santa's Little Helper emotional range. And both will growl and possibly snap if you try to take their food." Although animals in cartoons often behave with "semi-human awareness", Groening said on the DVD audio commentary for the episode "Two Dozen and One Greyhounds" that he prefers animals in cartoons to behave exactly the way they do in real life. As a result, Santa's Little Helper is depicted in this way on the show. There have, however, been some exceptions for gags, but most of the time the staff of "The Simpsons" tries to keep animals acting realistically. Several journalists have commented on the