What is a clone? How are they made? Is cloning a good thing?

clones is good for extinct animals but bad for human because it would be really scary for you to see someone who looks like you but Is not really you.To make a clone you need to take out a Mature cell for the animal you want to clone and then give the egg cell to anthor animal and and insert the cell to a mother and when it is born it will be identical to the animal that gave the egg cell.