I love this movie.
I love Robert Altman, Elliott Gould, Raymond Chandler and the cynicism and world-weariness of film noir (and its deconstruction).
And I love the cat. Especially the gag about trying to fool the cat into thinking it was getting the right brand of food...
Note: though it is an extended stoner joke from 1973, it has one extremely unpleasantly violent moment.
How weird that Elliot Gould is now "the man from Ocean's Twelve", not "the man from the movie M*A*S*H" (long before the tv series).