Answer:
I run around the streets all day. Under the bed or by the door I sit at night never alone. my tongue hangs out waiting to be fed during the day.
I fly away as soon as you set me loose. People around you may slowly move away once they sense my presence.
I am black when you buy me, red when you use me. When I turn white, you know it's time to throw me away. What am I?
I start new then become old. Start clean but be one dirty. I usually start big then become little.
Brown I am and much admired. Many horses have I tried. Tire a horse and worry a man, tell me this riddle if you can. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?