I've come to the conclusion that Lucy (or Lucy Loo, as she is often called) is part cat, part dog, part monkey and part little girl.
She will often climb to the top of the sofa and wrap herself around my neck.
She will play by herself once she has exhausted the other three dogs - Mattie, Simone and Eddie. She'll throw her toys to herself, often tossing them around the furniture. She'll rush around the room, actually running sideways across the front of the sofa and loveseat, before climbing to the top, discovering where her toy escaped to, and rushing to grab it before it gets away.