Answer:
I have a powerful bite and live in rivers and swamps. People are often afraid of my big jaws. What am I?
It has 8 arms and lots of ink but can't write a word.
What jumps when it walks and sits when it stands?
Who is it that rows quickly with four oars but never comes out under his own roof?
What asks but never answers?
I hold two meanings. With one I may be broken, with the other I hold on. What am I?