Answer:
What's 3/7 chicken, 2/3 cat, and 2/4 goat?
I can speak with my hard metal tongue. But I cannot breathe for I have no lung
I lose my head in the morning and regain back it at night.
I have fangs and enjoy piecing holes with a single bite.
You use a knife to slice my head and weep beside me when I am dead.
It weighs next to nothing but no one can hold it for long. What is it?