Answer:
Tear me off and scratch my head, what once was red is black instead. What am I?
A piece of paper that takes most people 3 or 4 years to get.
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
I am an instrument you can hear but cannot touch or see. What am I?
I am a sound made by felines when petted.
The answer I give is yes, but what I mean is no. What was the question?