Answer:
What does a WW1 Trench, A Submarine and a Popular Phone App all have in common?
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
What has a mouth but can't chew?
Hold the tail, while I fish for you.
You heart it speak, for it has a hard tongue. But it cannot breathe, for it has not a lung.
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?