Answer:
I have two bodies joined together as one. When standing still, I run and run. What am I?
I hatch without food
I am always around you but often forgotten. I am pure and clean most of the time, but occasionally rotten. What am I?
You hold my tail while I fish for you. What am I?
When I am caught, I am thrown away. When I escape, you itch all day. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.