A couple years ago, one of our neighbors gave us her old Fischer-Price Molly cow, much like the one in the photo above.
We tied some yarn to its neck so Jadzia could pull it around. After a while she began to call the cow her “Lassie” (the dog from the TV show). She would lose and regain interest in it over time.
Recently we watched the Wizard of Oz twice with Jadzia and Ludi. Ludi seems to have been especially captivated by it. She asks me daily (or more than once a day) to recount the story for her. I tell various versions, depending on how much time I feel like spending sitting down and talking.
And lately Ludi has begun taking the cow and calling it “Toto.” She, of course, is Dorothy. (Sometimes Josie is the Wicked Witch of the West.)
So Molly the Cow has become a stand-in for famous TV and movie dogs.