By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

We know that money can be names differently for the purpose it is used for. Some of the examples of money given at following places or for following activities:

In temple = Daan
In school = Fees
During marriage = Dowry
For divorce = Alimony
Paying government = Tax
In court = Fine
Employer to employee = Salary
To kidnappers = Ransom
For illegal reason = Bribe
To civil servant retirees = Pension

Do you know what do we call the money a husband gives to his wife?

Prove that twice of ten is the same as twice of eleven.

Which is the correct shadow of the bird?

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.

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

What is the next number in this matchsticks series riddle?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

When it's bad luck to meet a black cat?

Count the number of triangles in the below picture?