Lucie Arnaz (Kim Carter) does not appear in this episode, although her name does appear in the opening credits. Lucy is on the phone with Kim as the episode opens. Despite not being in the episode, Lucie Arnaz does the introduction on the series DVD.
One of the three inflatable punching bags in the office is Bozo the Clown. The character first appeared on television in 1949 starring Pinto Colvig. Colvig did all the dog barks and howls in "Lucy is Her Own Lawyer" in 1964.
This episode, and the one preceding it, "Kim Moves Out", make a near identical reference regarding goldfish: "Feed them once a day, and change the water once in a while."