Answer:
A man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?
What is red and nailed to a wall?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
Hard to catch, easy to hold. Can't be seen, unless it's cold
What asks but never answers?
What did the piece of wood say when he saw the screwdriver and screws approaching?