Answer:
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
A woman shoots her husband, then holds him under water for five minutes. Finally, she hangs him. Five minutes later they enjoy a wonderful dinner together. How can this be?
Long and slinky like a trout, never sings till it's guts come out.
They try to beat me, they try in vain. And when I win, I end the pain.
Only two backbones and thousands of ribs.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?