Answer:
I can run but not walk. Wherever I go, thought follows close behind. What am I?
I can generate fear and some say I come out of your ears. I am as quiet as a mouse but not welcomed in the house.
I come without being fetched at night, hide away as soon as daylight strikes. Although I may look small, I am much mightier than what you can imagine. What am I?
I cover what's real; hide what is true, but sometimes bring out the courage in you. What am I?
I have fangs and enjoy piecing holes with a single bite.
The answer I give is yes, but what I mean is no. What was the question?