It varies by jurisdiction, and we'd need to know this before the question could be answered. We field questions from a worldwide audience, and do not always have the luxury of knowing where the questions are coming from. Laws vary greatly throughout the world - especially on matters such as firearms - and there is no "one size fits all" answer for this question.
No, you do not.
watever
You can dry fire a "REPLICA" gun if the action will allow. Some "REPLICA" guns will not have a true action and therefore cannot be fired. NEVER try to load live ammunition in a "REPLICA" gun.
It may or may not depending on the type of replica.
no
yes
Non firing replica
In New Zealand you have to be 18 to own a gun licence.
Old enough!
18
Try google
12