I have seen this film a couple of times over the years and even though it is a little maudlin (most films with dogs and kids are) and, possibly, naive, it is very entertaining. Sellers does what I consider to be one of his best performances - up there with his rogue friend Terry Thomas in Tom Thumb. But being a Keaton fan it would have been wonderful to see him in the role with all his years of vaudeville and film experience. Can you believe young kids wandering the streets and befriending an old man? I wonder if PC would allow this kind of thing to be produced today... It has no pretensions, just good story telling. Well worth a watch without deep analysis.