Answer:
When you take away the whole from me there is always some left.
A piece of paper that takes most people 3 or 4 years to get.
Tear off my skin. I won't cry, but you will. What am I?
I grow up while growing down
I am a way to say goodbye to your sweetheart
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk