Answer:
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
What goes up and down stairs without moving?
Everyone has me and no one can lose me. What am I?
I begin and have no end. Eventually, I will be the ending of all that has begun. What am I?
Two bodies have I, though both joined in one. The more I stand still the faster I run. What am I?
What made Cyclops quit teaching?