Answer:
What can be heard and caught but never seen?
I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
Who spends the day at the window, goes to the table for meals. And hides at night?
Often held but never touched. Always wet but never rusts. Often bits but seldom bit. To use it well you must have wit.
I am the hole in the night, the ever watchful eye. I return in a cycle, to enlighten the sky.
When is it bad luck to see a black cat?