My 4 1/2 year old daughter just asked me this question yesterday. I loved it. I don't know where it came from, but it was such a great question.
You have to realize that I am extremely careful not to overload my family with "God talk." While I try to be a spiritual leader and teach God's truth, I have never and will never teach them to superspiritualize everything or make all our actions and decisions result in a spiritual lesson. I love Jesus and my greatest desire for my children is for them to love Him too, but I want their faith to be their own, not something that was forced on them.
I write that because this question (and others like "what does God look like?") she asks to do not come from an effort on my part to get her to ask them, they come straight from her own mind. Which makes the question that much more enjoyable. She's thinking about the same theological questions that I'm thinking about. Its a beautiful thing. I hope she always feels that she can ask me anything. I promised myself long ago that I wouldn't get mad or impatient about her questions. Sometimes they can be frustrating, especially when she asks the same thing over and over again. But I'm careful to handle it in such a way that she feels like I will always answer her willingly and honestly.
Of course the answer to her question is "yes!" In more ways than we realize.