There is no other-Buck Bundy. He was a French briard named Mike rescued by trainer Steven Ritt from the pound and I always though he fit in perfectly with the family and neighbors. He was left ungroomed to look sloppy on the furniture for a while and, while a lively creature in his own right who knew about twenty-five commands, looked great lying on the couch or begging for food. He could even turn his head away in disgust or escort girl dogs upstairs, and was often used for sight gags and interactions with the neighbors (there was one episode where his neutering led to a big Steve/Marcy argument about neutering him once they had their 2 perfect kids). In later seasons he had his own voiceovers, usually by writer Kevin Curran but once by the great Cheech Marin. In 1995, when Mike had to be retired because of hearing loss, he even had a whole episode dealing with his death, “Requiem for a Dead Briard”. Mike himself died in 1996.
In fact, he had several episodes where he was the main character, including Buck the Stud and Look Who’s Barking.
Which B.B. King himself was in.
And wrote a song for him called “Buck’s Lament”.
I rest my case.