Can you name an animal whose killing cannot be performed without spilling your own blood?

What kind of band never plays music?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Why Wine Glass Stem is so long?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What can you see in the middle of March and April that you can never see in any other month?

What 5-letter word typed in all capital letters can be read the same upside down?

Why do you find that most of the buildings are deprived of the 13th floor?