Answer:
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
What is that over the head and under the hat?
The more you take, the more you leave behind.
You need a key to receive an answer from me. The answer you'll find is straight from your mind. What is it?
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?
I have two eyes in the front and a lot of eyes on my tail
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?