Despite the prolonged presence of "Monkey Love" in her crib, I think Doggy is going to be her "security object" or whatever it is one calls these things.
She loves dogs and "woof" has been one of her first words. Both my brother and sister have dogs. Calliope adores both of these dogs, Taylor and Ruby, who disdainfully ignore her for the most part, though one has growled when Calliope has been "chasing" her (with Calliope crawling on hands and knees, it's not much of a chase) around the room.
So we used Grammy's birthday gift card to get this doggy, which looks a bit like "Cousin" Taylor and "Cousin" Ruby. So far, Doggy is a hit!