Answer:
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
What do people want the least on their hands?
What moves without seeing and cries without eyes?
What goes through a door but never goes in. And never comes out?
Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox.
What is so fragile that saying its name breaks it?