Answer:
When it comes to me you go on red and stop on green.
I am made by nature soft as silk; A puffy cloud white as milk; Snow tops this tropical crop; The dirtiest part of a mop.
I am the kind of soda you must not drink.
I am carried by mad animals.
I don't live within a house nor do I live without. Most will use me when they come in and again when they go out.
My first is snapping, snarling, growling, My second's industrious, romping, and prowling. Higgledy piggledy Here we lie, picked and plucked, and put in a pie.