Answer:
I am black when I am clean and white when I am dirty?
You will find me with four legs, but no hair. People ride me for hours, but I don't go anywhere without needing to be tugged. Jerked or turned on, I always manage to be ready for work.
Held firmly in the hands, like a sword it cuts deep. Bloodless strokes, all, then forward we leap.
What is eaten but not grown and was born in water but will disappear if soaked?
In your fire you hear me scream, creaking and whining, yet I am dead before you lay me in your hearth.
Why did the two 4s skip dinner?