Mr. Haney had a basset hound named Cynthia who had a crush on Mr. Ziffel's Arnold the Piggy.
Why do you want to irritate your corn?
Oliver Douglas: Irrigate. It means put water on it.
Lisa Douglas: Won't that irritate it?
In the opening song when Oliver sings "You are my wife," he reaches for Lisa with his left hand. As Lisa sings "Goodbye city life," Oliver reaches in and grabs her with his right hand.
In some episodes, the opening credits appear in unusual locations (e.g.: chicken eggs, towels, writing on walls, newspaper headlines). In other episodes, the characters - particularly Lisa - react to the appearance of the credits. These occurred as Eddie Albert & Eva Gabor', were singing their comical solo lyrics.