I have an eye but still cannot see.

Who am I?

A monk has a very specific ritual for climbing up the steps to the temple. First, he climbs up to the middle step and meditates for 1 minute. Then he climbs up 8 steps and faces east until he hears a bird singing. Then he walks down 12 steps and picks up a pebble. He takes one step up and tosses the pebble over his left shoulder. Now, he walks up the remaining steps three at a time which only takes him 9 paces. How many steps are there?

I am the fastest animal but cannot climb the tree. What am I?

What has many keys but can’t open a single lock?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?