There was a great line in Mallrats (one of many) that always stuck with me. It was after Jay outruns the mallcop and remarks:
"That dude is faster than Walt Flanagan's dog"
It had the ring of truth, and I started to notice Flanagan in the credits to Smith movies, confirming he was a real person, almost certainly a friend of Smith's, which seems to be bourne out by Comic Book Men.
This leads me to believe that he had a dog that was remarkable in the neighborhood for its speed. (Possibly it was a rescued greyhound?) This is something that has been nagging at me for years, so
Q: What breed was Walt Flanagan's dog in the early 90's?