Answer:
I am a desire to munch
I am whole but incomplete. I have no eyes, yet I see. My largest part is one fourth of what I once was. What am I?
I have branches but no fruit trunk or leaves. What am I?
I have fangs and enjoy piecing holes with a single bite.
What is black when it's clean and white when it's dirty?
I am your mother's brother's only brother in law. Who am I?