Answer:
What can you catch but not throw?
Use me to reward good behavior.
I hide in a dark tunnel awaiting my time. I can only be released by pulling back. Once released I may do unstoppable damage.
I widen my jaws when you poke two fingers in me. I especially like to devour papers
One pace to the north. Two paces to the east. Two paces to the south. Two paces to the west. One pace to the north.
A little house full of meat, no door to go in and eat.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic