Answer:
A thousand wheels, but move I do not. Call me what I am, call me a lot. What am I?
Face with a tree skin like the sea. A great beast I am. Yet vermin frightens me.
I contain six letters minus one and you got twelve.
I'm blue at day and black at night. I do contain some creatures born and died. What am I?
My keepers feed me colored balls. With sticks they store on my den walls. Sometimes I store them in my pouch. Sometimes deep in my belly; ouch!
What kind of dog has no tail?