Answer:
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?
Through its wounds, water does run. It once held many but now has none. What is it?
What five-letter word becomes shorter when you add two more letters?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?
People take me on walks and I run and have fun. What am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?