Answer:
I run up and down the stairs without moving
I have two bodies joined together as one. When standing still I run and run.
In Paris but not in France the thinnest of its siblings.
With a halo of water and a tongue of wood; stone as skin long I stood.
I am a cave full of bones and the house of a worm.
When is it bad luck to see a black cat?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic