What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

During which month do people sleep the least?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

If a wheel has 54 spokes, how many spaces are there between the spokes?

I am white when I am dirty, and black when I am clean. What am I?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?