Answer:
What has a spot and is very bright, is sometimes, red, white, blue, yellow or green and is often blinding.
Voiceless it cries,Voiceless it cries, Wingless flutters, Toothless bites, Mouthless mutters.
Ripped from my mother's womb. Beaten and burned, I become a blood thirsty killer.
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
I tremble at each breath of air, and yet can heaviest burdens bear.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.