Answer:
Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox.
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
A man shot two arrows at its center and missed both times, but using a sword swung once at its center and hit it twice.
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
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?
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?