Dogtown is the name of many places, movies, songs and a TV program.
This is the second episode in a row to start immediately with the couch gag. However, unlike Moho House, after the TV credits, the opening sequence (with a slightly different arrangement of the theme) is shown, starting from the title screen gag, but after Bart bounces on Barney, it cuts to Homer driving home from work (skipping the following scenes: Homer at the power plant, Marge and Maggie at the supermarket, and Lisa's saxophone solo). When Homer is driving home, after throwing the rod to Otto, he gets stuck in traffic and opens up the EZcape app to help him get through, thus starting the episode.
This is the first episode of the series to start in the middle of the opening sequence (in this case, this episode begins with Homer getting stuck in traffic instead of Homer driving to the Simpson house from the power plant).
Mayor Quimby breaks the fourth wall by joking about what state Springfield is in; after Quimby finds out about their current position on dogs, he mentions that Springfield will be known as the dog-loving capital of the world from that point forth, and that it will put Springfield on the map. His assistant asks why they are not on the map, but instead of revealing the answer, Quimby says that he doesn't understand, because he made twenty calls to Rand McNally, and the company doesn't even realize what state Springfield is in as well.
The song "You're My Best Friend" by Queen plays at the end of this episode when Marge reunites the homeless street rat, Ned Flanders, Mr. Burns, Rainier Wolfcastle, the elderly citizens, Bart and Lisa with their dogs. This song was first played in Moe Baby Blues when Moe was spending time with Maggie and during the slideshow of Homer and his ham.
This is the last episode where Alf Clausen composes music for the show before being fired.