Answer:
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
What does everyone know how to open but not how to close?
It is a path of cow juice spread across the sky but cannot be seen by the naked eye
I have four legs but no tail. Usually I am heard only at night.
There is one word that stands the test of time and holds fast to the center of everything. Though everyone will try at least once in their life to move around this word, but in fact, unknowingly, they use it every moment of the day. Young or old, awake or in sleep, human or animal, this word stands fast. It belongs to everyone, to all living things, but no one can master it. The word is?
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?