Answer:
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
What is red and nailed to a wall?
My teeth are sharp, my back is straight, to cut things up it is my fate.
What is yellow, looks like the moon and has seeds?
It is a path of cow juice spread across the sky but cannot be seen by the naked eye
What is so fragile that saying its name breaks it?