My Three Sons Season 6 Episode 16
A huge shaggy stray dog adopts Steve Douglas and disrupts the neighborhood with his howls when Steve tries to leave home. A neighbor and lover of stray animals, is delighted to learn that Steve plans to keep the dog until its owner can be found, rather than sending it to a shelter. However, the dog continues to regard Steve as his mother as well as his master.
Serie: My Three Sons
Episode Title: What About Harry?
Air Date: 1966-01-06