Answer:
I start new then become old. Start clean but be one dirty. I usually start big then become little.
I climb higher as I get hotter. I can never escape from my crystal cage.
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.
Glittering points that downward thrust. Sparkling spears that never rust. What am I?
Where do polar bears go to vote?