Answer:
Take one out and scratch my head I am now black but once was red.
With pointed fangs it sits in wait. With piercing force it doles out fate, over bloodless victims proclaiming its might. Eternally joining in a single bite.
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
Man walks over, and man swims under. In times of war, it can be burned asunder. What is it?
What do you have when you're sitting down that you don't have when you're standing up?
I am your mother's brother's only brother in law. Who am I?