Best riddles with simple answers

What is the ancient invention that allows people to see through walls?

Take away my first letter, and I still sound the same. Take away my last letter, I still sound the same. Even take away my letter in the middle, I will still sound the same. I am a five letter word. What am I?

What has many keys but can't open any doors?

What has 18 legs and catches flies?

What is more impressive than a talking dog?

There is an ancient invention still used in some parts of the world today that allows people to see through walls. What is it?

You are in a room with 3 monkeys. One monkey has a banana, one has a stick, and one has nothing. Who is the smartest primate?

Where do fish keep their money?

It makes more noise than a dog in your house. What is that?

I sometimes come in a can but I'm not food. I sometimes come in a bottle but I'm not a beverage. I come in different colors but I'm not a rainbow. I'm sometimes used with canvas but I'm not a tent. I'm used with a brush but I'm not toothpaste. What Am I?