When all the customers are leaving the smoke filled diner, they run passed a car with "Kowala" on the license plate. That was the word that Tim Conway said repeatedly on the The Carol Burnett Show (1967) to crack up Harvey Korman.
The interiors and exteriors of the real life home of the movie's story writer, associate producer and film director Stuart E. McGowan are used in several scenes.
The subtitle that describes the canine character of Bo (London) in the opening credits is "the world's smartest dog".
At least about eighteen cast and crew later worked on star Tim Conway's next picture They Went That-A-Way & That-A-Way (1978) which debuted the following year in 1978.
The two guards at the gates of the estate were played by a then well known Los Angeles radio comedy duo of Al Lohman (Guard #1) and Roger Barkley (Guard #2). The movie was the debut theatrical feature film of both.