Answer:
I have a neck but no head. I have a body but no arm. I have a bottom but no leg.
What kind of nut is empty at the center and has no shell.
What is it that given one, you’ll have either two or none?
What is the thing that stays the same size, but the more it's used the more it decreases?
I am the hole in the night, the ever watchful eye. I return in a cycle, to enlighten the sky.
People take me on walks and I run and have fun. What am I?