no same rules in all countries
That would depend on where you are from. Different countries have different rules and arrangements with other countries.
no
Different countries have different rules. So which country you are talking about?
Yes they are I and making a page on it
Both countries have different rules and therefore there might be some similarities but the rules are fairly different.
It's probably a cultural thing.
There are different rules about this for different Competitions and in different Countries and States.
Here in Australia it is perfectly OK to breed and sell them. Different countries may have different rules.
What country have you moved out of? As different countries will have different rules, I am familiar with Australian tax only.
That depends on your nationality. There can be different rules for different countries. Countries that are not members of the EU tend to have stricter rules, and even among those non-EU nations, there are different rules. The Department of Foreign Affairs website would have details on who needs visas to come to Ireland.
Not normally, but there are no hard and fast rules and different countries do things differently.