Answer:
When it comes to me, you go on red and stops on green. What am I?
I look like a tiny trombone
I stink in living but when dead smells good.
I follow you all the time and copy your every move but you can't touch me or catch me. What am I?
I row quickly with four oars but never comes out from under my own roof.
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?