Old Yeller-Belly is a great Simpsons episode with a very well written storyline and a ton of very funny scenes.I really enjoyed seeing Santa's Little Helper become Duffs new mascot,there are very few episodes that center around the Simpsons dog,but when there is they're always very good,we also see and learn a lot more from Duffman in this episode than we ever have previously,there are so many characters in the Simpsons which makes it hard to have episodes that focus on the less popular ones,but I like when they get more obscure characters to play important roles in an episode and hope they do it more often in the future.Old Yeller-Belly is a very enjoyable Simpsons episode.
Homer regrets disowning Santa's Little Helper after he becomes Duff beers new mascot and all his earnings go to his original owner.